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Howdy. You recently removed my claim from this article that the multiplication sign "symbolizes repeated (i.e., recursive) addition", calling it "ambiguous and technically not correct". I hope this question isn't too bothersome, but would you mind explaining to me how that statement is ambiguous or incorrect? For what it's worth, the source I cited (written by Barbara Oakley, a professor of engineering) states that "the multiplication sign symbolizes repeated addition." While she doesn't use the term recursive, isn't that the same thing? If it isn't, I'm happy to be corrected. I'm not a mathematician so I run the risk of inadvertently misusing math jargon. Thanks. Lord Bolingbroke ( talk) 05:52, 21 October 2017 (UTC)
Well, I really don't give a damn. So now you have it and it may stay as you like it. FYI: The original edit was by a learned, highly regarded User, who is also a translator, and obviously a native speaker of French. As I said: go on, flush it all down the drain! - The language and content of the articel is absolutely awful, lots of things are still missing, and the lack of knowledge for many parts is plain to see for all (as eg. the blunder of confounding cognoscere and cogitare etc.) But I don't care to improve that anymore. As I already guessed before: language skills equals "original research", what a shame! That's all. Bye! -- 89.15.239.196 ( talk) 22:41, 12 November 2017 (UTC)
FYI: I suspect that this edit somehow has something to do with the WP:Getting to Philosophy "game". See for example the edit history at Quantity. Paul August ☎ 16:08, 7 November 2017 (UTC)
I've been looking into this a bit more and I'm uncovering many more edits related to this "game". You may remember these edits which you reverted. These, just like the one to Element (mathematics) mentioned above, which you also reverted, were intended to break the loop: Mathematics -> Quantity -> Counting -> Element (mathematics) -> Mathematics, and insure that articles, which link to these articles will instead "get to Philosophy". Looking at User Sjtumlin16 edit history, you can see other edits intended to break other such loops, like the Sand fence -> Snow fence -> Sand fence loop, and the Household -> Dwelling -> Household loop. Paul August ☎ 22:03, 15 November 2017 (UTC)
I don't have a good answer to that. Paul August ☎ 23:35, 15 November 2017 (UTC)
I suppose it couldn't hurt. Paul August ☎ 18:44, 16 November 2017 (UTC)
Regarding my changes you reverted on Relative change and difference: https://en.wikipedia.org/?title=Relative_change_and_difference&diff=prev&oldid=744507896
You wrote "To obtain a percentage you multiply by 100 not 100%, check any reliable source; discuss this on the talk page if you must.". I must :). Your comment is incorrect. Just like Percentage states in it's introduction and "Examples" section, the expression "45%" is equal to "0.45", and therefore not equal to "0.45 x 100". An easy way to get around this problem is to multiply by "100%" instead of "100". This is what I edited. This workaround is mathematically correct and is still useful for beginners.
The page currently states that "By multiplying these ratios by 100 they can be expressed as percentages". This is incorrect. Un-multiplied ratios can be expressed perfectly fine as percentages. Most examples on Relative change and difference get this right and do not contain the incorrect "x 100".
These perhaps reliable sources (?) claim that the percent sign stands for "1/100", which is consistent with my viewpoint and inconsistent with yours:
-- 212.35.11.31 ( talk) 23:53, 12 November 2017 (UTC)
Just my 2 cents: This problem stems from the very unlucky, but wide spread use of the terms unitless and dimensionless, which are, additionally, used mostly in a sort of synonymous way. Both should be replaced (who am I to demand this!) by unit and dimension of unity. Maybe the abstract notion of numbers in pure math deserves the "xxx-less". However, as soon as there is something real under consideration, some dimension gets involved, e.g., length, quantity (of entities), rank (in a list), ratio (of measures), ... To make things still more complicated, the resulting quantities of these considerations are expressed by an absolute measure (a pure number) times some arbitrary(!) unit, e.g., for length in meter or inch, for quantitiy in dozens(dz) or gross(gr) or in unit unity, the denotation of which by e.g. is generally considered nonessential. Another unit, fitting to the dimension unity, is the , the denotation of a specific unit defined by , analogous to The task under discussion is the adaption of the absolute measure to various units, so that the same quantity is addressed.
I beg pardon, if I missed the generic terms of the English language. For some more examples of units fitting the dimension of unity, please see the German WP Zählmaße. Purgy ( talk) 09:01, 14 November 2017 (UTC)
Bill, I think I understand your viewpoint (and still don't agree) - but I don't think that it's important to agree. My point is this: If , this implies . Only one of the two expressions can be correct. In Relative change and difference#Percentage_change the first formula does not include , the second formula does. Can we agree that the notation on the page is inconsistent? Additionally, if we assume that "%" means "percent", which is a word, not to be used in calculations, then the subtraction and division of percentages in "Example of percentages of percentages" does not make sense. -- 212.35.11.31 ( talk) 19:06, 14 November 2017 (UTC)
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Hi, I just noticed two different definitions of director circle (= orthoptic of an ellipse). The second usage: ellipse (definition of an ellipse via a circle). May be, that I caused this confusion. Please, could You check and put it right ? -- Ag2gaeh ( talk) 15:19, 16 January 2018 (UTC)
"Not an improvement; trying to make an argument in a caption.", improvement can be using different descriptive semantic variations to convey meaning when literally true in form. It's not arguing for or against any point. You said the above from my (Zeno's paradox article addition of) "Showing an infintesimal 'syncopation' to the remainder of distance or distance made", I think that is more of a description, we're speaking of a literal dictionary definition; it's a semantic variation of the literal context. Whether or not it indicates the fact at hand may be the argument. So that logically, I made no argument, it is up to you to argue that such statement is an argument, and how. So may I ask how it poses an argument? Nagelfar ( talk) 17:25, 18 January 2018 (UTC)
Hi, someone placed the mark "unreferenced" to the section on the similarity of the parabolas. If there is really need of a citation, please, could You add one ? I have no access to English books. Thank You ! -- Ag2gaeh ( talk) 16:29, 23 January 2018 (UTC)
I think the image for Template:General geometry should be removed because it doesn't add any comprehensible information to the template. It doesn't tell the reader how to project a sphere onto a plane (the reader probably wasn't interested in this anyway). Brian Everlasting ( talk) 04:02, 28 January 2018 (UTC)
Marx's mathematical manuscripts are available at:
https://www.marxists.org/archive/marx/works/download/Marx_Mathematical_Manuscripts_1881.pdf
Judge for yourself the accuracy of "Engels' claim that Marx made "independent discoveries" is certainly justified."
Best, JS ( talk) 14:46, 1 February 2018 (UTC)
Did you intend to revert both of my edits, in different sections of the article made days apart? If you find any part of either edit to be an improvement, please do let me know, as I don't wish to be in an edit war. Please know that I tried hard to make these edits as appropriate as I could and am feeling somewhat dispirited that your response did not permit even a smidgen. 64.132.59.226 ( talk) 12:55, 21 February 2018 (UTC)
You know the only reason I caught that revert of yours was because, only a few minutes before, I almost reverted that IP's edit myself, thinking somehow it was a ref tag ;-) Paul August ☎ 18:39, 23 February 2018 (UTC)
From Ternary relation: An example of a ternary relation in elementary geometry is the collinearity of points.
But neither Line (geometry) nor Collinearity are operators. Should I create an isCollinear(p1, p2, p3) redirect with the Category:Ternary operations? The problem with many articles is that they cover operations, properties, etc. and the title obscures one aspect of the concept. Perhaps the collinearity article could state that it would at least be a ternary relation. Dpleibovitz ( talk) 21:59, 24 February 2018 (UTC)
I updated my User:Dpleibovitz page to give a better idea of what I try to do as a Wikipedian. I like to unify (to the extent possible under WP:NOR), especially in my areas of cognitive science, computing science, mathematics (& logic and digital electronics), philosophy, and ever-so-slightly, physics - my father was a physicist. This topic presents a case study. Firstly, I have excellent skills as a systems architect in complex systems (telecommunications, software). This requires generalizing (over similar things) and often, refactoring. The word operator is ambiguous with Operator (computer programming), Operator (physics), Logical operator, Operator (mathematics) & Operation (mathematics). In these cases, there is much behind the concepts which is more similar than different. Same is true for words such as function, method, (sub)routine, and relation; and indirectly tuples. For example, a computing function with two parameters could be seen as being a binary operator (in programming), or taking a single two-tuple and relating it to the returned value - all computing functions (or operators) can be seen as defining a relation between the result and the n-tuple - how we view these realizations is up to interpretation or implementation. The function need not be boolean nor represent a predicate. In any case, the notions of arity runs across all these concepts in very similar ways. I'm working on a table to capture these. That is also why I like general (discipline/formality independent) categories to capture the similarities (understanding that formal categories must also exist that have specific formal properties). So, much of my work is in adding see also and disambiguation entries, as well as more general categories. I get into trouble when I step over formal properties (which I thank you and other editors for spotting). But I also like to complete existing categories. These are hard if an article mentions that colinearity could be a ternary relation, but has no entry in the general Category:ternary operations. Somehow, I want to add the entry into that category, if not by the original article, then perhaps by an appropriate redirect. Dpleibovitz ( talk) 19:49, 26 February 2018 (UTC)
Hi, I have noticed that you reverted my changes in the Bisection method article. I have done those because I consider math symbols rendered as math instead of as plain text more readable. What is your reasoning behind the revert?
greetings... You and the other editor are merely asserting "not reliable" source, for that ref, but not offering just how. Also, that source was already discussed and agreed upon, with consensus, and established some time ago. It seems more that you just don't like the ref cuz it doesn't seem to meet up to something like "Britannica" or something...but Wikipedia does not stipulate that it necessarily has to be so well-known to be "reliable". Learning.com is simply a teaching and student and academic website. And WP does not forbid such sites as sources, necessarily. And the statement is unsourced. So what's the big issue here? I always kneel to consensus (even if provably wrong), but let's not let " I don't like" be the real motivation to remove this thing. And forgetting that this is a WIKI...and no one editor "owns" any article...and respect other people's contributions. Regardless of personal tastes or likes. The burden is on YOU to prove that this site is so obviously "unreliable" and just an "advertisement"...and totally not usable. You simply have not done that. Assertions without actual facts and proof don't cut it. Regards. 71.246.98.233 ( talk) 18:33, 20 March 2018 (UTC)
that source was already discussed and agreed upon, with consensus, and established some time ago- and exactly where was that. I was certainly part of at least one discussion of this, and there was no consensus, in fact only the editor who put it in had anything positive to say and most of that sounded just like your diatribe above. As for being a reliable source, look at WP:RSVETTING. This will give you an idea of what I look at to determine if a source is reliable. The source you insist on fails in almost all categories. All your huffing and puffing does not change the fact that this is a "teaser ad" for the website and that is unacceptable for Wikipedia. -- Bill Cherowitzo ( talk) 18:54, 20 March 2018 (UTC)
I am copying this discussion to the Talk:Sphere page where it belongs. -- Bill Cherowitzo ( talk) 18:00, 22 March 2018 (UTC)
Recently I shared my proves at "Regualr Polygon"
What's your problem? What's poorly written? Are you stupid or what? I took 2 hours to write stuff and you delete it in one second. Here what: Go to hell and piss of! I don't care if Ill be banned from Wiki. If this is the community of wikipedia, then it sucks. Because I came here not for spending time on nothing! — Preceding unsigned comment added by Anatoly Wein ( talk • contribs) 18:01, 21 April 2018 (UTC)
Why? Wikipedia is just worse if you don't allow my proves to appear. I spend 2 hours time on releasing my proves. All you do is reverting them. Congratulations! You're all bad. "Ill delete your stuff you took 15 hours on editing. Sorry." Sorry but Wikipedia is idiotically bad.
The edit I added filled in a missing step in my understanding of why this is impossible. If I received permission from my professor to post the transcript online (e.g. a blog) and I refer to that would it be acceptable? He is a professor at a major state university after all. His credibility is important to him so he wouldn’t take the claim lightly. Does Wikipedia ironically only accept traditionally published experts? Chidedneck ( talk) 06:21, 28 April 2018 (UTC)
I think you may have misread my edit. It did not claim that "this information was known years before Lindemann proved the transcendental nature of π". It did confirm that a geometric diagram starting with a unit circle which would otherwise demonstrate that squaring the circle is possible, is in fact not possible due to the fact that since 1 is an algebraic number it can only lead to other algebraic numbers. The reverted text makes an unsupported claim when it says: "It had been known for some decades before then that the construction would be impossible if π were transcendental". My edit was an attempt to close the logical gap left by "it was known" by citing my math professor. I concede the point about vetted secondary sources being the ideal sources, you're right. The geometric figure was: Chidedneck ( talk) 06:14, 29 April 2018 (UTC)
Stop spelling center wrong. I know it is the British way, but the makes no pronunciation sense. The Clorax ( talk) 00:27, 30 April 2018 (UTC)
https://en.wikipedia.org/?title=Regular_polygon&oldid=837566468
revert it finally. I took myself 2 hours! How can you tell me that you have any idea in maths. If you really rejected this, then you're noobish in maths! You're helpless. Old veteran finding it funny to remove my proves...
STUPID!
You have reverted the inclusion of two books ("best sellers" in France) dealing with the problem of the Infinite in Sciences (mathematics and astronomy). I am new in Wikipedia, after using it for many years as a passive reader I decided that now is time to help other readers. I have a PhD in Physics, professor at the University, and also working a lot with history of sciences. Instead of reverting again your deletion, I prefer you get convinced of my modification and include it again in the article. The books have an ISBN, and I verified that they are at WorldCat, and even for sale in Amazon (USA, France, Canada). So, please, tell me what are the factors that make you believe are not verified sources. Start from the title, contributors, references, etc. You can argue they are in French and this article is in English, but nowadays you need to understand many languages if you want to know more about science. I myself understand/write/read in English, Spanish, and French. Thank you for any advice you can give me. And, after you are convinced, please revert my modifications in the article on Infinite. Thank you! Triboscience ( talk) 00:49, 4 May 2018 (UTC) — Preceding unsigned comment added by Triboscience ( talk • contribs) 00:42, 4 May 2018 (UTC)
{{
subst:DRN-notice|topic|noticeboard=noticeboard|reason=a very important statement, supported by numerous outside reliable sources and by Wikipedia itself. the section i added described the important work of Sharaf al-Dīn al-Ṭūsī and his contribution to the development of the function.ive added the sources as requested but the subject was Abandoned. the sources show clearly,the early stages of the method.i also want to add al Bruni contribution at the same section supported by another source ill provide.|thread=
/info/en/?search=Talk:History_of_the_function_concept#Sharaf_al-D%C4%ABn_al-%E1%B9%AC%C5%ABs%C4%AB}}
--~~~~Dear Wcherowi, was there anything wrong with the formula I added to the section Binomial coefficient:Identities involving binomial coefficients ?
In the formula m is an integer less or equal to n, as h few lines above (it is also unspecified). Also, I don't see any citation for the formulae above.
-- Gim²y ( talk) 15:15, 1 May 2018 (UTC)
Hi Bill, thanks for your review of my edits to Binomial coefficient.
This is one of my first edits, so not sure what is appropriate where. I see you reverted the change, marking it as "good faith" (which if I understand correctly is saying you believe the edits were done in good faith) and with the comment "Unsourced and not quite correct".
As background, what happened was that I came across a math problem that required an application of the above identity, which I was not familiar with, and which I then found on this wikipedia page. However, I could not find a simple combinatorial proof for it even though I thought it seemed like there should be one. I searched for Chu-Vandermonde identity and could not even find other references to this form of the identity but only the main one (Identity 9 - the one marked as an alternate form of the main Chu-Vandermonde identity). So I found a combinatorial proof of the hockey stick identity and then constructed a combinatorial proof of identity 9 myself, along similar lines, because I thought it could be helpful to others. I also asked a friend to verify my proof for readability and correctness, to lower the risk of posting something wrong (though I knew it would be reviewed).
So, my questions are:
thanks Ronnie Ronniemaor ( talk) 14:43, 4 June 2018 (UTC)
A series of facts is what you deleted while calling it "undocumented opinion". Definitions of "===" in the Ruby programming language are not opinions, they are definitions. There is no use of the "===" operator in the standard classes that matches the mathematical definition of "set inclusion". If you can't verify that fact using the interpreter, there is also a reference manual. If citation is needed, then add a "citation needed" tag. :-((( Matju2 ( talk) 01:05, 26 June 2018 (UTC)
In reality, === does not do "set inclusion". What's Gillette's ("why's") book actually means is that it tests for membership in some set, for some classes of left-hand values. By default, === does the same as ==, and this default also applies to many types that otherwise could have been considered as sets of some kind, such as Arrays and Hashes. The reason for the existence of === is as way to define case...when...else...end expressions (called "switch statements" in several other languages) in a more convenient way than if it had used ==, but that possibility was only really used for a small portion of classes, chiefly Range, Regexp, Module/Class, though it can be extended at will to user-defined types.
Now,
In reality, === does not do set inclusion." implies that you are claiming something in a written source is not true in practice. This is not a paraphrase of what is in the source, it is your opinion.
What's Gillette's ("why's") book actually means is...", again you are interpreting what is in a given source, ... that is opinion and not fact.
The reason for the existence of === is as way to define ...", unless you are an originator of the Ruby language or are sourcing such a person, this is your interpretation of why this symbol was introduced, again opinion, not fact.
« Case Equality – For class Object, effectively the same as calling #==, but typically overridden by descendants to provide meaningful semantics in case statements. » [2] ; « Returns true if obj is an element of the range, false otherwise. Conveniently, === is the comparison operator used by case statements. » [3] which means set membership, not set inclusion. If you test (2..5)===(3..4), it returns false, because the subrange 3..4 is not an element of 2..5. The output of the interpreter is not my opinion. Gillette's book has an error in it and Wikipedia is citing this error. Also, the easiest way to look at the list of all standard definitions of === is to install Ruby and look for just "===" in ri (in a Linux or OSX terminal you'd type just "ri ==="). There you see that all of them are either plain equality, or set membership for some definition of set. But there seems to be no online (http url) equivalent. BTW, I got no notification, I was just making sure you hadn't replied and found you had done so days ago already. Matju2 ( talk) 20:12, 29 June 2018 (UTC)
I don't agree with this revert [4]: can you explain? I don't understand the significance of the edit summary and the Cramér model being "conjecture". Of course the distribution of primes isn't really random. The link to the Cramér model was just to show that the "random" model has some history and is used for some calculations like this. The section is about a heuristic guess about Fermat primes that doesn't pretend to be rigorous. The Cramér model is not "conjectured": it's outright false if taken as a precise statement. It's simply being used as a heuristic approximation, and is the usual name for the random model described in the Fermat prime article.
The Cramér conjecture (about gaps between primes) is not the same thing as the Cramér model, if that's the "conjecture" you were objecting to. Rather, the model is heuristic evidence for the conjecture (and similarly for there being a finite number of Fermat primes). The pipelink to Cramér model was the right thing because that's a more precise name for the heuristic presumption that the primes are distributed randomly according to the PNT. 173.228.123.166 ( talk) 03:50, 17 July 2018 (UTC)
Added: see here for more info. 173.228.123.166 ( talk) 03:56, 17 July 2018 (UTC)
![]() | This is an archive of past discussions. Do not edit the contents of this page. If you wish to start a new discussion or revive an old one, please do so on the current talk page. |
Archive 1 | Archive 2 | Archive 3 | Archive 4 | Archive 5 | Archive 6 |
Howdy. You recently removed my claim from this article that the multiplication sign "symbolizes repeated (i.e., recursive) addition", calling it "ambiguous and technically not correct". I hope this question isn't too bothersome, but would you mind explaining to me how that statement is ambiguous or incorrect? For what it's worth, the source I cited (written by Barbara Oakley, a professor of engineering) states that "the multiplication sign symbolizes repeated addition." While she doesn't use the term recursive, isn't that the same thing? If it isn't, I'm happy to be corrected. I'm not a mathematician so I run the risk of inadvertently misusing math jargon. Thanks. Lord Bolingbroke ( talk) 05:52, 21 October 2017 (UTC)
Well, I really don't give a damn. So now you have it and it may stay as you like it. FYI: The original edit was by a learned, highly regarded User, who is also a translator, and obviously a native speaker of French. As I said: go on, flush it all down the drain! - The language and content of the articel is absolutely awful, lots of things are still missing, and the lack of knowledge for many parts is plain to see for all (as eg. the blunder of confounding cognoscere and cogitare etc.) But I don't care to improve that anymore. As I already guessed before: language skills equals "original research", what a shame! That's all. Bye! -- 89.15.239.196 ( talk) 22:41, 12 November 2017 (UTC)
FYI: I suspect that this edit somehow has something to do with the WP:Getting to Philosophy "game". See for example the edit history at Quantity. Paul August ☎ 16:08, 7 November 2017 (UTC)
I've been looking into this a bit more and I'm uncovering many more edits related to this "game". You may remember these edits which you reverted. These, just like the one to Element (mathematics) mentioned above, which you also reverted, were intended to break the loop: Mathematics -> Quantity -> Counting -> Element (mathematics) -> Mathematics, and insure that articles, which link to these articles will instead "get to Philosophy". Looking at User Sjtumlin16 edit history, you can see other edits intended to break other such loops, like the Sand fence -> Snow fence -> Sand fence loop, and the Household -> Dwelling -> Household loop. Paul August ☎ 22:03, 15 November 2017 (UTC)
I don't have a good answer to that. Paul August ☎ 23:35, 15 November 2017 (UTC)
I suppose it couldn't hurt. Paul August ☎ 18:44, 16 November 2017 (UTC)
Regarding my changes you reverted on Relative change and difference: https://en.wikipedia.org/?title=Relative_change_and_difference&diff=prev&oldid=744507896
You wrote "To obtain a percentage you multiply by 100 not 100%, check any reliable source; discuss this on the talk page if you must.". I must :). Your comment is incorrect. Just like Percentage states in it's introduction and "Examples" section, the expression "45%" is equal to "0.45", and therefore not equal to "0.45 x 100". An easy way to get around this problem is to multiply by "100%" instead of "100". This is what I edited. This workaround is mathematically correct and is still useful for beginners.
The page currently states that "By multiplying these ratios by 100 they can be expressed as percentages". This is incorrect. Un-multiplied ratios can be expressed perfectly fine as percentages. Most examples on Relative change and difference get this right and do not contain the incorrect "x 100".
These perhaps reliable sources (?) claim that the percent sign stands for "1/100", which is consistent with my viewpoint and inconsistent with yours:
-- 212.35.11.31 ( talk) 23:53, 12 November 2017 (UTC)
Just my 2 cents: This problem stems from the very unlucky, but wide spread use of the terms unitless and dimensionless, which are, additionally, used mostly in a sort of synonymous way. Both should be replaced (who am I to demand this!) by unit and dimension of unity. Maybe the abstract notion of numbers in pure math deserves the "xxx-less". However, as soon as there is something real under consideration, some dimension gets involved, e.g., length, quantity (of entities), rank (in a list), ratio (of measures), ... To make things still more complicated, the resulting quantities of these considerations are expressed by an absolute measure (a pure number) times some arbitrary(!) unit, e.g., for length in meter or inch, for quantitiy in dozens(dz) or gross(gr) or in unit unity, the denotation of which by e.g. is generally considered nonessential. Another unit, fitting to the dimension unity, is the , the denotation of a specific unit defined by , analogous to The task under discussion is the adaption of the absolute measure to various units, so that the same quantity is addressed.
I beg pardon, if I missed the generic terms of the English language. For some more examples of units fitting the dimension of unity, please see the German WP Zählmaße. Purgy ( talk) 09:01, 14 November 2017 (UTC)
Bill, I think I understand your viewpoint (and still don't agree) - but I don't think that it's important to agree. My point is this: If , this implies . Only one of the two expressions can be correct. In Relative change and difference#Percentage_change the first formula does not include , the second formula does. Can we agree that the notation on the page is inconsistent? Additionally, if we assume that "%" means "percent", which is a word, not to be used in calculations, then the subtraction and division of percentages in "Example of percentages of percentages" does not make sense. -- 212.35.11.31 ( talk) 19:06, 14 November 2017 (UTC)
Hello, Wcherowi. Voting in the 2017 Arbitration Committee elections is now open until 23.59 on Sunday, 10 December. All users who registered an account before Saturday, 28 October 2017, made at least 150 mainspace edits before Wednesday, 1 November 2017 and are not currently blocked are eligible to vote. Users with alternate accounts may only vote once.
The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.
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Hi, I just noticed two different definitions of director circle (= orthoptic of an ellipse). The second usage: ellipse (definition of an ellipse via a circle). May be, that I caused this confusion. Please, could You check and put it right ? -- Ag2gaeh ( talk) 15:19, 16 January 2018 (UTC)
"Not an improvement; trying to make an argument in a caption.", improvement can be using different descriptive semantic variations to convey meaning when literally true in form. It's not arguing for or against any point. You said the above from my (Zeno's paradox article addition of) "Showing an infintesimal 'syncopation' to the remainder of distance or distance made", I think that is more of a description, we're speaking of a literal dictionary definition; it's a semantic variation of the literal context. Whether or not it indicates the fact at hand may be the argument. So that logically, I made no argument, it is up to you to argue that such statement is an argument, and how. So may I ask how it poses an argument? Nagelfar ( talk) 17:25, 18 January 2018 (UTC)
Hi, someone placed the mark "unreferenced" to the section on the similarity of the parabolas. If there is really need of a citation, please, could You add one ? I have no access to English books. Thank You ! -- Ag2gaeh ( talk) 16:29, 23 January 2018 (UTC)
I think the image for Template:General geometry should be removed because it doesn't add any comprehensible information to the template. It doesn't tell the reader how to project a sphere onto a plane (the reader probably wasn't interested in this anyway). Brian Everlasting ( talk) 04:02, 28 January 2018 (UTC)
Marx's mathematical manuscripts are available at:
https://www.marxists.org/archive/marx/works/download/Marx_Mathematical_Manuscripts_1881.pdf
Judge for yourself the accuracy of "Engels' claim that Marx made "independent discoveries" is certainly justified."
Best, JS ( talk) 14:46, 1 February 2018 (UTC)
Did you intend to revert both of my edits, in different sections of the article made days apart? If you find any part of either edit to be an improvement, please do let me know, as I don't wish to be in an edit war. Please know that I tried hard to make these edits as appropriate as I could and am feeling somewhat dispirited that your response did not permit even a smidgen. 64.132.59.226 ( talk) 12:55, 21 February 2018 (UTC)
You know the only reason I caught that revert of yours was because, only a few minutes before, I almost reverted that IP's edit myself, thinking somehow it was a ref tag ;-) Paul August ☎ 18:39, 23 February 2018 (UTC)
From Ternary relation: An example of a ternary relation in elementary geometry is the collinearity of points.
But neither Line (geometry) nor Collinearity are operators. Should I create an isCollinear(p1, p2, p3) redirect with the Category:Ternary operations? The problem with many articles is that they cover operations, properties, etc. and the title obscures one aspect of the concept. Perhaps the collinearity article could state that it would at least be a ternary relation. Dpleibovitz ( talk) 21:59, 24 February 2018 (UTC)
I updated my User:Dpleibovitz page to give a better idea of what I try to do as a Wikipedian. I like to unify (to the extent possible under WP:NOR), especially in my areas of cognitive science, computing science, mathematics (& logic and digital electronics), philosophy, and ever-so-slightly, physics - my father was a physicist. This topic presents a case study. Firstly, I have excellent skills as a systems architect in complex systems (telecommunications, software). This requires generalizing (over similar things) and often, refactoring. The word operator is ambiguous with Operator (computer programming), Operator (physics), Logical operator, Operator (mathematics) & Operation (mathematics). In these cases, there is much behind the concepts which is more similar than different. Same is true for words such as function, method, (sub)routine, and relation; and indirectly tuples. For example, a computing function with two parameters could be seen as being a binary operator (in programming), or taking a single two-tuple and relating it to the returned value - all computing functions (or operators) can be seen as defining a relation between the result and the n-tuple - how we view these realizations is up to interpretation or implementation. The function need not be boolean nor represent a predicate. In any case, the notions of arity runs across all these concepts in very similar ways. I'm working on a table to capture these. That is also why I like general (discipline/formality independent) categories to capture the similarities (understanding that formal categories must also exist that have specific formal properties). So, much of my work is in adding see also and disambiguation entries, as well as more general categories. I get into trouble when I step over formal properties (which I thank you and other editors for spotting). But I also like to complete existing categories. These are hard if an article mentions that colinearity could be a ternary relation, but has no entry in the general Category:ternary operations. Somehow, I want to add the entry into that category, if not by the original article, then perhaps by an appropriate redirect. Dpleibovitz ( talk) 19:49, 26 February 2018 (UTC)
Hi, I have noticed that you reverted my changes in the Bisection method article. I have done those because I consider math symbols rendered as math instead of as plain text more readable. What is your reasoning behind the revert?
greetings... You and the other editor are merely asserting "not reliable" source, for that ref, but not offering just how. Also, that source was already discussed and agreed upon, with consensus, and established some time ago. It seems more that you just don't like the ref cuz it doesn't seem to meet up to something like "Britannica" or something...but Wikipedia does not stipulate that it necessarily has to be so well-known to be "reliable". Learning.com is simply a teaching and student and academic website. And WP does not forbid such sites as sources, necessarily. And the statement is unsourced. So what's the big issue here? I always kneel to consensus (even if provably wrong), but let's not let " I don't like" be the real motivation to remove this thing. And forgetting that this is a WIKI...and no one editor "owns" any article...and respect other people's contributions. Regardless of personal tastes or likes. The burden is on YOU to prove that this site is so obviously "unreliable" and just an "advertisement"...and totally not usable. You simply have not done that. Assertions without actual facts and proof don't cut it. Regards. 71.246.98.233 ( talk) 18:33, 20 March 2018 (UTC)
that source was already discussed and agreed upon, with consensus, and established some time ago- and exactly where was that. I was certainly part of at least one discussion of this, and there was no consensus, in fact only the editor who put it in had anything positive to say and most of that sounded just like your diatribe above. As for being a reliable source, look at WP:RSVETTING. This will give you an idea of what I look at to determine if a source is reliable. The source you insist on fails in almost all categories. All your huffing and puffing does not change the fact that this is a "teaser ad" for the website and that is unacceptable for Wikipedia. -- Bill Cherowitzo ( talk) 18:54, 20 March 2018 (UTC)
I am copying this discussion to the Talk:Sphere page where it belongs. -- Bill Cherowitzo ( talk) 18:00, 22 March 2018 (UTC)
Recently I shared my proves at "Regualr Polygon"
What's your problem? What's poorly written? Are you stupid or what? I took 2 hours to write stuff and you delete it in one second. Here what: Go to hell and piss of! I don't care if Ill be banned from Wiki. If this is the community of wikipedia, then it sucks. Because I came here not for spending time on nothing! — Preceding unsigned comment added by Anatoly Wein ( talk • contribs) 18:01, 21 April 2018 (UTC)
Why? Wikipedia is just worse if you don't allow my proves to appear. I spend 2 hours time on releasing my proves. All you do is reverting them. Congratulations! You're all bad. "Ill delete your stuff you took 15 hours on editing. Sorry." Sorry but Wikipedia is idiotically bad.
The edit I added filled in a missing step in my understanding of why this is impossible. If I received permission from my professor to post the transcript online (e.g. a blog) and I refer to that would it be acceptable? He is a professor at a major state university after all. His credibility is important to him so he wouldn’t take the claim lightly. Does Wikipedia ironically only accept traditionally published experts? Chidedneck ( talk) 06:21, 28 April 2018 (UTC)
I think you may have misread my edit. It did not claim that "this information was known years before Lindemann proved the transcendental nature of π". It did confirm that a geometric diagram starting with a unit circle which would otherwise demonstrate that squaring the circle is possible, is in fact not possible due to the fact that since 1 is an algebraic number it can only lead to other algebraic numbers. The reverted text makes an unsupported claim when it says: "It had been known for some decades before then that the construction would be impossible if π were transcendental". My edit was an attempt to close the logical gap left by "it was known" by citing my math professor. I concede the point about vetted secondary sources being the ideal sources, you're right. The geometric figure was: Chidedneck ( talk) 06:14, 29 April 2018 (UTC)
Stop spelling center wrong. I know it is the British way, but the makes no pronunciation sense. The Clorax ( talk) 00:27, 30 April 2018 (UTC)
https://en.wikipedia.org/?title=Regular_polygon&oldid=837566468
revert it finally. I took myself 2 hours! How can you tell me that you have any idea in maths. If you really rejected this, then you're noobish in maths! You're helpless. Old veteran finding it funny to remove my proves...
STUPID!
You have reverted the inclusion of two books ("best sellers" in France) dealing with the problem of the Infinite in Sciences (mathematics and astronomy). I am new in Wikipedia, after using it for many years as a passive reader I decided that now is time to help other readers. I have a PhD in Physics, professor at the University, and also working a lot with history of sciences. Instead of reverting again your deletion, I prefer you get convinced of my modification and include it again in the article. The books have an ISBN, and I verified that they are at WorldCat, and even for sale in Amazon (USA, France, Canada). So, please, tell me what are the factors that make you believe are not verified sources. Start from the title, contributors, references, etc. You can argue they are in French and this article is in English, but nowadays you need to understand many languages if you want to know more about science. I myself understand/write/read in English, Spanish, and French. Thank you for any advice you can give me. And, after you are convinced, please revert my modifications in the article on Infinite. Thank you! Triboscience ( talk) 00:49, 4 May 2018 (UTC) — Preceding unsigned comment added by Triboscience ( talk • contribs) 00:42, 4 May 2018 (UTC)
{{
subst:DRN-notice|topic|noticeboard=noticeboard|reason=a very important statement, supported by numerous outside reliable sources and by Wikipedia itself. the section i added described the important work of Sharaf al-Dīn al-Ṭūsī and his contribution to the development of the function.ive added the sources as requested but the subject was Abandoned. the sources show clearly,the early stages of the method.i also want to add al Bruni contribution at the same section supported by another source ill provide.|thread=
/info/en/?search=Talk:History_of_the_function_concept#Sharaf_al-D%C4%ABn_al-%E1%B9%AC%C5%ABs%C4%AB}}
--~~~~Dear Wcherowi, was there anything wrong with the formula I added to the section Binomial coefficient:Identities involving binomial coefficients ?
In the formula m is an integer less or equal to n, as h few lines above (it is also unspecified). Also, I don't see any citation for the formulae above.
-- Gim²y ( talk) 15:15, 1 May 2018 (UTC)
Hi Bill, thanks for your review of my edits to Binomial coefficient.
This is one of my first edits, so not sure what is appropriate where. I see you reverted the change, marking it as "good faith" (which if I understand correctly is saying you believe the edits were done in good faith) and with the comment "Unsourced and not quite correct".
As background, what happened was that I came across a math problem that required an application of the above identity, which I was not familiar with, and which I then found on this wikipedia page. However, I could not find a simple combinatorial proof for it even though I thought it seemed like there should be one. I searched for Chu-Vandermonde identity and could not even find other references to this form of the identity but only the main one (Identity 9 - the one marked as an alternate form of the main Chu-Vandermonde identity). So I found a combinatorial proof of the hockey stick identity and then constructed a combinatorial proof of identity 9 myself, along similar lines, because I thought it could be helpful to others. I also asked a friend to verify my proof for readability and correctness, to lower the risk of posting something wrong (though I knew it would be reviewed).
So, my questions are:
thanks Ronnie Ronniemaor ( talk) 14:43, 4 June 2018 (UTC)
A series of facts is what you deleted while calling it "undocumented opinion". Definitions of "===" in the Ruby programming language are not opinions, they are definitions. There is no use of the "===" operator in the standard classes that matches the mathematical definition of "set inclusion". If you can't verify that fact using the interpreter, there is also a reference manual. If citation is needed, then add a "citation needed" tag. :-((( Matju2 ( talk) 01:05, 26 June 2018 (UTC)
In reality, === does not do "set inclusion". What's Gillette's ("why's") book actually means is that it tests for membership in some set, for some classes of left-hand values. By default, === does the same as ==, and this default also applies to many types that otherwise could have been considered as sets of some kind, such as Arrays and Hashes. The reason for the existence of === is as way to define case...when...else...end expressions (called "switch statements" in several other languages) in a more convenient way than if it had used ==, but that possibility was only really used for a small portion of classes, chiefly Range, Regexp, Module/Class, though it can be extended at will to user-defined types.
Now,
In reality, === does not do set inclusion." implies that you are claiming something in a written source is not true in practice. This is not a paraphrase of what is in the source, it is your opinion.
What's Gillette's ("why's") book actually means is...", again you are interpreting what is in a given source, ... that is opinion and not fact.
The reason for the existence of === is as way to define ...", unless you are an originator of the Ruby language or are sourcing such a person, this is your interpretation of why this symbol was introduced, again opinion, not fact.
« Case Equality – For class Object, effectively the same as calling #==, but typically overridden by descendants to provide meaningful semantics in case statements. » [2] ; « Returns true if obj is an element of the range, false otherwise. Conveniently, === is the comparison operator used by case statements. » [3] which means set membership, not set inclusion. If you test (2..5)===(3..4), it returns false, because the subrange 3..4 is not an element of 2..5. The output of the interpreter is not my opinion. Gillette's book has an error in it and Wikipedia is citing this error. Also, the easiest way to look at the list of all standard definitions of === is to install Ruby and look for just "===" in ri (in a Linux or OSX terminal you'd type just "ri ==="). There you see that all of them are either plain equality, or set membership for some definition of set. But there seems to be no online (http url) equivalent. BTW, I got no notification, I was just making sure you hadn't replied and found you had done so days ago already. Matju2 ( talk) 20:12, 29 June 2018 (UTC)
I don't agree with this revert [4]: can you explain? I don't understand the significance of the edit summary and the Cramér model being "conjecture". Of course the distribution of primes isn't really random. The link to the Cramér model was just to show that the "random" model has some history and is used for some calculations like this. The section is about a heuristic guess about Fermat primes that doesn't pretend to be rigorous. The Cramér model is not "conjectured": it's outright false if taken as a precise statement. It's simply being used as a heuristic approximation, and is the usual name for the random model described in the Fermat prime article.
The Cramér conjecture (about gaps between primes) is not the same thing as the Cramér model, if that's the "conjecture" you were objecting to. Rather, the model is heuristic evidence for the conjecture (and similarly for there being a finite number of Fermat primes). The pipelink to Cramér model was the right thing because that's a more precise name for the heuristic presumption that the primes are distributed randomly according to the PNT. 173.228.123.166 ( talk) 03:50, 17 July 2018 (UTC)
Added: see here for more info. 173.228.123.166 ( talk) 03:56, 17 July 2018 (UTC)