Mikhail Katz's user avatar
Mikhail Katz's user avatar
Mikhail Katz's user avatar
Mikhail Katz
  • Member for 11 years, 4 months
  • Last seen this week
40 votes
4 answers
7k views

Did Euler prove theorems by example?

38 votes
6 answers
3k views

What are the advantages of the more abstract approaches to nonstandard analysis?

35 votes
9 answers
14k views

What is... a grossone?

22 votes
9 answers
5k views

Was the early calculus inconsistent?

22 votes
2 answers
2k views

Euler's mathematics in terms of modern theories?

21 votes
3 answers
2k views

Felix Klein on mean value theorem and infinitesimals

19 votes
6 answers
7k views

Does the derivative of log have a Dirac delta term?

19 votes
2 answers
2k views

Did Hilbert discuss his 23 problems with Felix Klein?

19 votes
3 answers
941 views

How big can a wedge of $n$ 2-forms in $\mathbb{R}^{2n}$ be?

18 votes
2 answers
1k views

New articles by Errett Bishop on constructive type theory?

17 votes
1 answer
2k views

Did Lagrange change his mind about infinitesimals?

16 votes
1 answer
2k views

What is the precise relationship between o-minimal theory and Grothendieck's "Esquisse d'un programme"?

14 votes
2 answers
2k views

Fermat's opponents

13 votes
4 answers
977 views

Source for analysis of identification of structures in learner's mind and mathematical structures?

13 votes
6 answers
2k views

Intuitionistic logic as quantization of classical logic?

12 votes
3 answers
864 views

Bibliographic request concerning an article by Bernstein and Robinson

12 votes
3 answers
3k views

Has Dedekind's proof of existence of infinite sets been analyzed by historians?

11 votes
4 answers
368 views

Tameness in $\mathbb{R}^{n^2}$ of the subset consisting of matrices of positive determinant

11 votes
1 answer
789 views

Lalouvère's activities as censor

11 votes
2 answers
1k views

Is sigma-additivity of Lebesgue measure deducible from ZF?

10 votes
5 answers
3k views

Assessing effectiveness of (epsilon, delta) definitions [closed]

10 votes
0 answers
364 views

diameter as a Morse function

10 votes
2 answers
954 views

Who was the first to discover that the curvature of an embedded surface is the product of the principal curvatures?

9 votes
2 answers
2k views

Which universities teach true infinitesimal calculus? [closed]

9 votes
1 answer
684 views

Who said "the naive counting numbers don't exhaust $\Bbb N$"?

9 votes
2 answers
901 views

differential geometry using Robinson's infinitesimals?

9 votes
1 answer
653 views

Constant Gaussian curvature surfaces in 3-space containing lines

8 votes
1 answer
271 views

Can Alexandrov surfaces of CAT(0) type be approximated by CAT(0) polyhedra?

8 votes
2 answers
731 views

Paul Cohen on genesis of method of forcing and mathematical similarities

8 votes
1 answer
2k views

What is the relation between Lefschetz fixed point theorem and Poincare-Hopf theorem on vector fields?