User Kostya_I

30 votes

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Can one make high-level proofs about chess positions?

answered Jan 31, 2016 at 18:57

30 votes

Examples of theorems misapplied to non-mathematical contexts

answered Apr 27, 2016 at 8:41

30 votes

Prominent non-mathematical work of mathematicians

answered Aug 21, 2020 at 6:42

29 votes

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What is the difference between elementary and non-elementary proofs of the Prime Number Theorem?

answered Apr 12, 2023 at 22:02

24 votes

Identity of J. L. Rabinowitsch (of Rabinowitsch Trick)

answered Feb 20, 2022 at 10:21

23 votes

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To prove irrationality, why integrate?

answered Apr 4, 2023 at 22:29

20 votes

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What is the origin/history of the following very short definition of the Lebesgue integral?

answered Dec 1, 2022 at 13:28

20 votes

Are hypergeometric series not taught often at universities nowadays, and if so, why?

answered Apr 26, 2021 at 20:29

19 votes

M. M. Artyukhov / М. М. Артюхов

answered Jan 23, 2022 at 22:10

17 votes

Why decompose a function with eigenvectors of Laplace operator?

answered Feb 24, 2016 at 1:10

14 votes

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Why do we use hexagons in percolation?

answered Aug 14, 2017 at 11:13

14 votes

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Motivated account of the prime number theorem and related topics

answered Aug 26, 2018 at 22:16

14 votes

How do you generate math figures for academic papers?

answered Dec 16, 2021 at 15:34

13 votes

Examples of notably long or difficult proofs that only improve upon existing results by a small amount

answered Sep 10, 2018 at 7:32

11 votes

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Is the composition of two nowhere differentiable functions still nowhere differentiable?

answered May 27, 2019 at 18:05

11 votes

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Counterexamples to differentiation under integral sign, revisited

answered Dec 11, 2022 at 10:54

11 votes

Twice continuously differentiable implied by existence of limit

answered Oct 25, 2023 at 15:27

10 votes

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Number of self avoiding paths on a grid graph?

answered Oct 16, 2018 at 20:25

10 votes

Determinant of an $8 \times 8$ antisymmetric matrix

answered Jul 5, 2017 at 10:43

10 votes

The "Dzhanibekov effect" - an exercise in mechanics or fiction? Explain mathematically a video from a space station

answered Aug 22, 2014 at 22:25

9 votes

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Proof of Green's formula for rectifiable Jordan curves

answered Aug 7, 2018 at 10:12

9 votes

Lebesgue measure theory applications

answered Aug 10, 2018 at 10:56

9 votes

What are the benefits of writing vector inner products as $\langle u, v\rangle$ as opposed to $u^T v$?

answered Jul 20, 2020 at 11:02

8 votes

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Intercept the missile

answered Apr 18, 2020 at 16:51

8 votes

Reference request: Extensions of Wiener's Tauberian Theorem

answered Jun 6, 2019 at 12:07

8 votes

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A robust version of "a holomorphic function is determined by its modulus"

answered Dec 18, 2022 at 23:24

7 votes

Defects of Hamel bases for analysis in infinite dimensions

answered Sep 30, 2021 at 7:17

7 votes

Particularities about the honeycomb lattice for the computation of connectivity constant

answered Nov 25, 2021 at 9:35

7 votes

Two arcs in the complement of a disc must intersect?

answered Nov 27, 2023 at 23:40

7 votes

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Does the analytical continuation of $\sum f(n) x^n $ always have a branch cut if $f(z)$ has a pole?

answered Jan 29, 2023 at 8:13

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143 Answers

Can one make high-level proofs about chess positions?

Examples of theorems misapplied to non-mathematical contexts

Prominent non-mathematical work of mathematicians

What is the difference between elementary and non-elementary proofs of the Prime Number Theorem?

Identity of J. L. Rabinowitsch (of Rabinowitsch Trick)

To prove irrationality, why integrate?

What is the origin/history of the following very short definition of the Lebesgue integral?

Are hypergeometric series not taught often at universities nowadays, and if so, why?

M. M. Artyukhov / М. М. Артюхов

Why decompose a function with eigenvectors of Laplace operator?

Why do we use hexagons in percolation?

Motivated account of the prime number theorem and related topics

How do you generate math figures for academic papers?

Examples of notably long or difficult proofs that only improve upon existing results by a small amount

Is the composition of two nowhere differentiable functions still nowhere differentiable?

Counterexamples to differentiation under integral sign, revisited

Twice continuously differentiable implied by existence of limit

Number of self avoiding paths on a grid graph?

Determinant of an $8 \times 8$ antisymmetric matrix

The "Dzhanibekov effect" - an exercise in mechanics or fiction? Explain mathematically a video from a space station

Proof of Green's formula for rectifiable Jordan curves

Lebesgue measure theory applications

What are the benefits of writing vector inner products as $\langle u, v\rangle$ as opposed to $u^T v$?

Intercept the missile

Reference request: Extensions of Wiener's Tauberian Theorem

A robust version of "a holomorphic function is determined by its modulus"

Defects of Hamel bases for analysis in infinite dimensions

Particularities about the honeycomb lattice for the computation of connectivity constant

Two arcs in the complement of a disc must intersect?

Does the analytical continuation of $\sum f(n) x^n $ always have a branch cut if $f(z)$ has a pole?