Andrey Rekalo's user avatar
Andrey Rekalo's user avatar
Andrey Rekalo's user avatar
Andrey Rekalo
  • Member for 13 years, 11 months
  • Last seen this week
133 votes

Interpreting the Famous Five equation

91 votes

Elementary+Short+Useful

88 votes

Suggestions for good notation

69 votes
Accepted

Why do we care about $L^p$ spaces besides $p = 1$, $p = 2$, and $p = \infty$?

66 votes
Accepted

Determinant of sum of positive definite matrices

60 votes
Accepted

Applications of mathematics

55 votes
Accepted

Can we cover the unit square by these rectangles?

52 votes
Accepted

Geometric interpretation of the half-derivative?

47 votes
Accepted

Is the "Napkin conjecture" open? (origami)

46 votes

Counterexamples in PDE

41 votes
Accepted

Nonexistence of boundary between convergent and divergent series?

36 votes
Accepted

What does the word "symplectic" mean?

31 votes
Accepted

Are there smooth bodies of constant width?

31 votes
Accepted

Intuition and/or visualisation of Itô integral/Itô's lemma

30 votes

Establishing zeta(3) as a definite integral and its computation.

29 votes
Accepted

Parabolic envelope of fireworks

29 votes
Accepted

On the non-rigorous calculations of the trajectories in the moon landings

29 votes
Accepted

How did Bernoulli prove L'Hôpital's rule?

28 votes

Abstract thought vs calculation

27 votes

Examples of common false beliefs in mathematics

26 votes

What are some correct results discovered with incorrect (or no) proofs?

26 votes
Accepted

Which Fréchet spaces have a dual that is a Fréchet space?

25 votes
Accepted

Is this number already known to be transcendental? Is there a survey about up-to-date trascendence results?

25 votes
Accepted

What was Weierstrass's counterexample to the Dirichlet Principle?

25 votes

Polynomials having a common root with their derivatives

24 votes

Why are differential forms called closed and exact?

23 votes

What are some correct results discovered with incorrect (or no) proofs?

23 votes

Are there other nice math books close to the style of Tristan Needham?

22 votes

Nontrivial question about Fibonacci numbers?

22 votes
Accepted

Ramanujan's eccentric Integral formula

1
2 3 4 5 6