04:5504:55, 9 October 2019diffhist+322
Curvature
Reverted edits by D.Lazard. Problems: The osculating circle was defined incorrectly, with 2 points P and Q. Osculating circle is defined with 3 points! The section "Plane Curves" seems like a 'history' section. Mathematical formulae should be provided (for instantaneous rate change of direction.., or rate of change of tangent vector..). Writing "It is intuitively clear that curvature is the .." seems as if a new reader would already know of it in advance, which may not be possible.UnsynchronizedTag: Visual edit
15:2115:21, 2 October 2019diffhist−1,342
Involute
Problems in the latest edit: "Intuitive" is a wrong word in the lead para. "It is". The curve 'is' made by a string. It is a mathematical article, and the main word was missing: "locus". The mathematical definition given was a definition of stasis(no motion). Quoting a text from the lead "Sometimes, one of the involutes....... ". This paragraph is not for the lead. In the next section,"in fact" is not the right phrase. And some more.
04:5504:55, 9 October 2019diffhist+322
Curvature
Reverted edits by D.Lazard. Problems: The osculating circle was defined incorrectly, with 2 points P and Q. Osculating circle is defined with 3 points! The section "Plane Curves" seems like a 'history' section. Mathematical formulae should be provided (for instantaneous rate change of direction.., or rate of change of tangent vector..). Writing "It is intuitively clear that curvature is the .." seems as if a new reader would already know of it in advance, which may not be possible.UnsynchronizedTag: Visual edit
15:2115:21, 2 October 2019diffhist−1,342
Involute
Problems in the latest edit: "Intuitive" is a wrong word in the lead para. "It is". The curve 'is' made by a string. It is a mathematical article, and the main word was missing: "locus". The mathematical definition given was a definition of stasis(no motion). Quoting a text from the lead "Sometimes, one of the involutes....... ". This paragraph is not for the lead. In the next section,"in fact" is not the right phrase. And some more.