Andrey Rekalo

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Name	Andrey Rekalo
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6

Questions

votes newest views recent

15

32

votes

3

answers

4k

views

On linear independence of exponentials

ca.analysis-and-odes cv.complex-variables classical-mechanics

oct 4 at 20:02 Alexandre Eremenko 10.6k●1●24●40

8

17

votes

4

answers

3k

views

Volumes of n-balls: what is so special about n=5?

mg.metric-geometry geometric-measure-theory recreational

oct 22 11 at 17:22 I. J. Kennedy 1,195●1●13●22

5

14

votes

2

answers

914

views

How to define a differential form on a fractal?

ap.analysis-of-pdes dg.differential-geometry fractals

oct 3 11 at 4:49 Zach Conn 103●1●7

7

7

votes

2

answers

1k

views

The Cauchy-Riemann equations and analyticity

cv.complex-variables ca.analysis-and-odes

oct 6 10 at 12:58 Nate Eldredge 5,748●24●48

4

7

votes

1

answer

1k

views

The Invariant Subspace Problem: examples

fa.functional-analysis open-problem

may 4 11 at 22:56 Manfred Sauter 76●1

4

votes

3

answers

427

views

Minimal surface which divides a convex body into two regions of equal volume

mg.metric-geometry variational-calculus classical-mechanics geometric-measure-theory

oct 28 11 at 5:18 Alex Cunha 1

154

Answers

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Interpreting the Famous Five equation

Elementary+Short+Useful

Suggestions for good notation

Applications of mathematics

Counterexamples in PDE

Is “Napkin conjecture” open ? (ORIGAMI)

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

Determinant of sum of positive definite matrices

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

What are some correct results discovered with incorrect (or no) proofs? (2)

What does the word “symplectic” mean?

Are there smooth bodies of constant width?

How did Bernoulli prove L’Hôpital’s rule?

Borel set plus a closed set = Borel

Can we cover the unit square by these rectangles?

Nonexistence of boundary between convergent and divergent series?

Parabolic envelope of fireworks

Abstract Thought vs Calculation

Why are differential forms called closed and exact?

Examples of non-rigorous but efficient mathematical methods in physics

What was Weierstrass’s counterexample to the Dirichlet Principle?

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

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

Existence/Uniqueness of solutions to quasi-Lipschitz ODEs

Existence of a smooth function with nowhere converging Taylor series at every point

Does pointwise convergence imply uniform convergence on a large subset?

Polynomials having a common root with their derivatives

Examples of common false beliefs in mathematics.

What is the probability that the range of a set of N randomly chosen real numbers in [0, 1] is less than the reciprocal of N?

Why is the Laplacian ubiquitous?

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