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For questions about the discipline that uses differential calculus and linear algebra to study geometrical problems.
4
votes
1
answer
220
views
Did anybody consider the product of the principal curvatures before Gauss?
Gauss proved that the so-called Gaussian curvature is an intrinsic invariant of the surface, even though it is defined extrinsically as the product of the principal curvatures of a Euclidean embedding …
3
votes
0
answers
266
views
Priority on lemniscate of Gerono?
The Lemniscate of Gerono is a special case of the Lissajous curves. The dates for the two mathematicians are fairly close: Gerono (1799-1891) and Lissajous (1822-1880). Historically who has priority …