User D.R.

18 votes

0 answers

1k views

Does there exist a continuous open map from the closed annulus to the closed disk?

asked Aug 4, 2023 at 19:04

7 votes

0 answers

274 views

Simple/Elementary derivation of Ramanujan's continued fraction for Hurwitz $\zeta(3,x+1)$

asked Jan 16 at 20:27

6 votes

1 answer

370 views

What is the relationship between the Leech lattice and Dedekind eta function?

asked Dec 23, 2022 at 23:07

6 votes

1 answer

399 views

Densities, pseudoforms, absolute differential forms and measures, differential forms, etc

asked Mar 21 at 19:23

5 votes

1 answer

804 views

Arzelà-Ascoli for $C_b(0,1)$? Or more generally, why is that continuous functions "live most naturally" on compact spaces?

asked Dec 27, 2021 at 22:36

4 votes

1 answer

214 views

Rates of convergence to Tracy-Widom?

asked May 26, 2020 at 2:45

3 votes

0 answers

428 views

"Maehara-style" proof of Jordan-Schoenflies theorem?

asked May 30, 2023 at 6:42

2 votes

1 answer

460 views

How essential is the vanishing of the Dirichlet $L$-functions to Dirichlet's theorem on primes in arithmetic progressions?

asked Sep 11, 2021 at 3:40

2 votes

2 answers

364 views

Is there a compactly supported differentiable function whose Fourier transform is not in L1?

asked Mar 14 at 16:26

2 votes

0 answers

102 views

Division based recurrence with negative coefficients, e.g. $F(n)= -F(\lfloor n/2\rfloor) - F(\lfloor n/3\rfloor)$

asked Jun 29 at 5:49

1 vote

1 answer

256 views

Conceptual explanation for extra/missing $p$ solutions to $x^2+y^2=a \pmod p$ at $a=0$

asked Nov 8, 2023 at 16:45

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11 Questions

Does there exist a continuous open map from the closed annulus to the closed disk?

Simple/Elementary derivation of Ramanujan's continued fraction for Hurwitz $\zeta(3,x+1)$

What is the relationship between the Leech lattice and Dedekind eta function?

Densities, pseudoforms, absolute differential forms and measures, differential forms, etc

Arzelà-Ascoli for $C_b(0,1)$? Or more generally, why is that continuous functions "live most naturally" on compact spaces?

Rates of convergence to Tracy-Widom?

"Maehara-style" proof of Jordan-Schoenflies theorem?

How essential is the vanishing of the Dirichlet $L$-functions to Dirichlet's theorem on primes in arithmetic progressions?

Is there a compactly supported differentiable function whose Fourier transform is not in L1?

Division based recurrence with negative coefficients, e.g. $F(n)= -F(\lfloor n/2\rfloor) - F(\lfloor n/3\rfloor)$

Conceptual explanation for extra/missing $p$ solutions to $x^2+y^2=a \pmod p$ at $a=0$