![]() | Infinity symbol has been listed as one of the
Mathematics good articles under the
good article criteria. If you can improve it further,
please do so. If it no longer meets these criteria, you can
reassess it. Review: February 22, 2022. ( Reviewed version). |
![]() | A fact from Infinity symbol appeared on Wikipedia's
Main Page in the
Did you know column on 11 March 2022 (
check views). The text of the entry was as follows:
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Represents time no longer flowing/running out. — Preceding unsigned comment added by 47.55.176.9 ( talk) 20:08, 9 January 2015 (UTC)
The Infiniti logo is not a deformed version of the infinity symbol, it's clearly a road pointing in the distance, such as this image http://i.imgur.com/spCswXb.jpg. Don't see the point of including this obscure Lazy 8 studios, given that there are plenty of other more notable examples without it, and their Wikipedia page doesn't even show the logo. It isn't supposed to be an exhaustive list of companies employing the infinity symbol in their logo. CrocodilesAreForWimps ( talk) 04:22, 15 July 2016 (UTC)
This unreferenced statement is most likely false. Please read the section Typesetting#Pre-digital era and look at "Diagram of a cast metal sort." Also, look at the full-sized photo of "Movable type on a composing stick on a type case" (photo at top of article). In both of these, you will see that a cast metal sort (a letter or character of moveable type) is rectangular in shape. Hence, there is no way that you can put a cast metal sort for an "8" on its side to obtain the infinity symbol. It would take a separate cast metal sort to obtain this symbol.
In 2011, I removed a similar sentence from Infinity. For the 2011 reply to my above statement, see Talk:Infinity#Removed unreference statement about turning an "8" on its side. -- RJGray ( talk) 16:13, 6 September 2017 (UTC)
The first sentence of the Usage sentence is as follows:
"In mathematics, the infinity symbol is used more often to represent a potential infinity, rather than an actually infinite quantity as included in the extended real numbers, the ordinal numbers and the cardinal numbers (which use other notations). For instance, in mathematical expressions with summations and limits such as the one below:
the infinity sign is conventionally interpreted as meaning that the variable grows arbitrarily large towards infinity—rather than actually taking an infinite value."
This is complete nonsense.
There is no such things as a "potential infinity" in mathematics.
The infinity symbol as the upper limit of the summation sign signifies an actual infinity: the number of terms in the summation.
Nonexistent concepts such as "potential infinity" do not need to be invented and cited. 2601:200:C000:1A0:A092:B45C:E058:ACB4 ( talk) 00:37, 3 November 2021 (UTC)
I restored the mention of Euler’s variant of Wallis symbol’s of infinity. I think the mention of it is relevant to this page, and especially so since Euler is very famous. The fact that we don’t have secondary sources confirming this variant didn’t catch on appears to me as a further argument to mention it, as the primary sources (Euler’s papers), are a proof it was indeed used. Wikipedia cannot restrain from using information on the ground that it is not confirmed by a secondary source: it would mean Wikipedia is a second rate encyclopedia.-- Sapphorain ( talk) 20:50, 4 January 2022 (UTC)
I had never heard of this variation of the symbol before, but Cajori, A History Of Mathematical Notations Volume II §421 [1] does talk about it, in one sentence. So I guess it's reasonable to mention it in an article about the symbol, without over-emphasizing it. (By the way, there's some other interesting stuff in that section too, like the notation , which I see was discussed at MathOverflow before.) Adumbrativus ( talk) 02:29, 5 January 2022 (UTC)
The result was: promoted by
Rlink2 (
talk)
01:04, 3 March 2022 (UTC)
To T:DYK/P5
Improved to Good Article status by David Eppstein ( talk). Self-nominated at 02:15, 24 February 2022 (UTC).
General: Article is new enough and long enough |
---|
Policy: Article is sourced, neutral, and free of copyright problems |
---|
|
Hook: Hook has been verified by provided inline citation |
---|
|
QPQ: Done. |
Overall:
@
David Eppstein: New enough, approved Feb 22. Earwig detects plagiarism, but the articles listed copy directly from Wikipedia itself (one literally just says "Source: Wikipedia") so that shouldn't be an issue. As a general thing, and this does not need to disqualify the article but I would definitely appreciate the meaning behind the individual instances of the symbols usage under the "Graphic design" section, as the page does not really elaborate on why they would use the symbol. Great work and congratulations on the getting the article to good article status!
Ornithoptera (
talk)
04:57, 26 February 2022 (UTC)
@ David Eppstein, I have a question regarding these series and limit expression in this section. I couldn't find any relation between this expression
Also, I haven't found yet that expression in a cited reference, especially for that limit. Would you like to give an explanation? Regards, Dedhert.Jr ( talk) 10:26, 17 August 2022 (UTC)
Tap the ?123 button and tap =\< button and go to the = and hold it for 3 sec and go to 1 left and you can type infinity method: 2 type ∞ in the google search and go find the symbol in the text blue it and tap copy and go to your keyboard and tap the text thing for 0.0167-1 sec and tap paste and ∞ method 3: go to settings and go to symbols and insert =(but holded and holded 1 left) and type in the name the name of the symbold and go to keyboard and type somthing you named it and it will apper and this won't update i will just let you guys enjoy and those are just the 3 methods to type it 2601:680:8301:73E0:94BC:EB38:87BF:6E05 ( talk) 06:14, 2 January 2024 (UTC)
![]() | Infinity symbol has been listed as one of the
Mathematics good articles under the
good article criteria. If you can improve it further,
please do so. If it no longer meets these criteria, you can
reassess it. Review: February 22, 2022. ( Reviewed version). |
![]() | A fact from Infinity symbol appeared on Wikipedia's
Main Page in the
Did you know column on 11 March 2022 (
check views). The text of the entry was as follows:
| ![]() |
![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||
|
Represents time no longer flowing/running out. — Preceding unsigned comment added by 47.55.176.9 ( talk) 20:08, 9 January 2015 (UTC)
The Infiniti logo is not a deformed version of the infinity symbol, it's clearly a road pointing in the distance, such as this image http://i.imgur.com/spCswXb.jpg. Don't see the point of including this obscure Lazy 8 studios, given that there are plenty of other more notable examples without it, and their Wikipedia page doesn't even show the logo. It isn't supposed to be an exhaustive list of companies employing the infinity symbol in their logo. CrocodilesAreForWimps ( talk) 04:22, 15 July 2016 (UTC)
This unreferenced statement is most likely false. Please read the section Typesetting#Pre-digital era and look at "Diagram of a cast metal sort." Also, look at the full-sized photo of "Movable type on a composing stick on a type case" (photo at top of article). In both of these, you will see that a cast metal sort (a letter or character of moveable type) is rectangular in shape. Hence, there is no way that you can put a cast metal sort for an "8" on its side to obtain the infinity symbol. It would take a separate cast metal sort to obtain this symbol.
In 2011, I removed a similar sentence from Infinity. For the 2011 reply to my above statement, see Talk:Infinity#Removed unreference statement about turning an "8" on its side. -- RJGray ( talk) 16:13, 6 September 2017 (UTC)
The first sentence of the Usage sentence is as follows:
"In mathematics, the infinity symbol is used more often to represent a potential infinity, rather than an actually infinite quantity as included in the extended real numbers, the ordinal numbers and the cardinal numbers (which use other notations). For instance, in mathematical expressions with summations and limits such as the one below:
the infinity sign is conventionally interpreted as meaning that the variable grows arbitrarily large towards infinity—rather than actually taking an infinite value."
This is complete nonsense.
There is no such things as a "potential infinity" in mathematics.
The infinity symbol as the upper limit of the summation sign signifies an actual infinity: the number of terms in the summation.
Nonexistent concepts such as "potential infinity" do not need to be invented and cited. 2601:200:C000:1A0:A092:B45C:E058:ACB4 ( talk) 00:37, 3 November 2021 (UTC)
I restored the mention of Euler’s variant of Wallis symbol’s of infinity. I think the mention of it is relevant to this page, and especially so since Euler is very famous. The fact that we don’t have secondary sources confirming this variant didn’t catch on appears to me as a further argument to mention it, as the primary sources (Euler’s papers), are a proof it was indeed used. Wikipedia cannot restrain from using information on the ground that it is not confirmed by a secondary source: it would mean Wikipedia is a second rate encyclopedia.-- Sapphorain ( talk) 20:50, 4 January 2022 (UTC)
I had never heard of this variation of the symbol before, but Cajori, A History Of Mathematical Notations Volume II §421 [1] does talk about it, in one sentence. So I guess it's reasonable to mention it in an article about the symbol, without over-emphasizing it. (By the way, there's some other interesting stuff in that section too, like the notation , which I see was discussed at MathOverflow before.) Adumbrativus ( talk) 02:29, 5 January 2022 (UTC)
The result was: promoted by
Rlink2 (
talk)
01:04, 3 March 2022 (UTC)
To T:DYK/P5
Improved to Good Article status by David Eppstein ( talk). Self-nominated at 02:15, 24 February 2022 (UTC).
General: Article is new enough and long enough |
---|
Policy: Article is sourced, neutral, and free of copyright problems |
---|
|
Hook: Hook has been verified by provided inline citation |
---|
|
QPQ: Done. |
Overall:
@
David Eppstein: New enough, approved Feb 22. Earwig detects plagiarism, but the articles listed copy directly from Wikipedia itself (one literally just says "Source: Wikipedia") so that shouldn't be an issue. As a general thing, and this does not need to disqualify the article but I would definitely appreciate the meaning behind the individual instances of the symbols usage under the "Graphic design" section, as the page does not really elaborate on why they would use the symbol. Great work and congratulations on the getting the article to good article status!
Ornithoptera (
talk)
04:57, 26 February 2022 (UTC)
@ David Eppstein, I have a question regarding these series and limit expression in this section. I couldn't find any relation between this expression
Also, I haven't found yet that expression in a cited reference, especially for that limit. Would you like to give an explanation? Regards, Dedhert.Jr ( talk) 10:26, 17 August 2022 (UTC)
Tap the ?123 button and tap =\< button and go to the = and hold it for 3 sec and go to 1 left and you can type infinity method: 2 type ∞ in the google search and go find the symbol in the text blue it and tap copy and go to your keyboard and tap the text thing for 0.0167-1 sec and tap paste and ∞ method 3: go to settings and go to symbols and insert =(but holded and holded 1 left) and type in the name the name of the symbold and go to keyboard and type somthing you named it and it will apper and this won't update i will just let you guys enjoy and those are just the 3 methods to type it 2601:680:8301:73E0:94BC:EB38:87BF:6E05 ( talk) 06:14, 2 January 2024 (UTC)