User Henri Cohen - MathOverflow

24 votes

3 answers

3k views

Analogue of Fermat's "little" theorem

asked Jun 14, 2022 at 14:43

23 votes

1 answer

2k views

wrong formula for Atkin--Lehner operators?

asked Mar 23, 2018 at 23:24

22 votes

1 answer

1k views

Hadamard factorization of L-functions

asked Aug 30, 2020 at 22:21

19 votes

2 answers

853 views

CM zeros of unary theta series

asked Jan 26, 2025 at 11:48

16 votes

2 answers

1k views

New series for $\pi$ from string theory

asked Jul 21, 2024 at 18:53

16 votes

0 answers

275 views

Hypergeometric representation of Eisenstein series

asked Jun 19, 2019 at 6:27

16 votes

2 answers

510 views

$3$-ranks of elliptic curves and representations $p=ax^3+by^3$

asked Apr 18, 2020 at 13:57

15 votes

1 answer

508 views

Asymptotic behavior of sum linked with Lagrange interpolation

asked Oct 22, 2018 at 20:10

14 votes

1 answer

1k views

Euler factors of L-function at bad primes

asked Oct 7, 2018 at 21:11

12 votes

3 answers

566 views

Rational eigenforms

asked Jun 13, 2017 at 21:18

12 votes

1 answer

550 views

Characters of weight 1 cusp forms

asked Dec 19, 2015 at 21:39

12 votes

2 answers

637 views

Computation of modified Gauss sums

asked Jan 24, 2022 at 12:39

12 votes

1 answer

687 views

$p$-adic L function of an odd Dirichlet character

asked May 2, 2023 at 18:20

11 votes

1 answer

271 views

Properties of the ring of all holomorphic modular forms

asked Nov 3, 2023 at 13:49

11 votes

0 answers

353 views

More identities for the Lambert $W$ function

asked Nov 20, 2020 at 20:45

10 votes

1 answer

271 views

periods of higher weight modular forms

asked Dec 17, 2017 at 17:14

10 votes

2 answers

1k views

Kuznetsov trace formula, orthogonality of Bessel functions

asked Jul 9, 2018 at 16:35

9 votes

2 answers

589 views

Riemann-Hilbert and orthogonal polynomials

asked Apr 12, 2019 at 15:21

9 votes

0 answers

426 views

Equality of Hecke L-functions

asked Sep 19, 2016 at 9:55

9 votes

1 answer

248 views

Linear relation between $_3F_2$ at $z=1$

asked Aug 12, 2017 at 9:54

9 votes

1 answer

852 views

field of definition of Fricke involution applied to a modular form

asked Sep 9, 2017 at 17:48

9 votes

1 answer

241 views

Finding a rational point of large height on an elliptic curve knowing a real approximation

asked Mar 3, 2024 at 18:32

9 votes

1 answer

535 views

A hypergeometric series for $\Gamma(1/4)^4/\pi^3$

asked Sep 27, 2024 at 21:51

8 votes

1 answer

602 views

Trivial (?) product/series expansions for sine and cosine

asked Oct 8, 2022 at 16:36

8 votes

1 answer

184 views

Petersson square of twist

asked Oct 27, 2017 at 20:08

8 votes

2 answers

446 views

Antiderivative of totally real polynomials

asked Dec 3, 2020 at 10:35

7 votes

2 answers

429 views

$|(A+B)(X)|=o(X)$ if $|A(X)|=O(X^{1/2})$ and $|B(X)|=O(X^{1/2})$?

asked Aug 31, 2019 at 17:33

7 votes

2 answers

265 views

Evaluation of hypergeometric type continued fraction

asked Sep 7, 2019 at 9:56

7 votes

2 answers

418 views

Conflicting notation for periods of elliptic functions

asked Apr 1, 2025 at 21:01

6 votes

0 answers

295 views

Partial fraction expansions of meromorphic functions

asked Jul 3, 2024 at 21:43

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50 Questions

Analogue of Fermat's "little" theorem

wrong formula for Atkin--Lehner operators?

Hadamard factorization of L-functions

CM zeros of unary theta series

New series for $\pi$ from string theory

Hypergeometric representation of Eisenstein series

$3$-ranks of elliptic curves and representations $p=ax^3+by^3$

Asymptotic behavior of sum linked with Lagrange interpolation

Euler factors of L-function at bad primes

Rational eigenforms

Characters of weight 1 cusp forms

Computation of modified Gauss sums

$p$-adic L function of an odd Dirichlet character

Properties of the ring of all holomorphic modular forms

More identities for the Lambert $W$ function

periods of higher weight modular forms

Kuznetsov trace formula, orthogonality of Bessel functions

Riemann-Hilbert and orthogonal polynomials

Equality of Hecke L-functions

Linear relation between $_3F_2$ at $z=1$

field of definition of Fricke involution applied to a modular form

Finding a rational point of large height on an elliptic curve knowing a real approximation

A hypergeometric series for $\Gamma(1/4)^4/\pi^3$

Trivial (?) product/series expansions for sine and cosine

Petersson square of twist

Antiderivative of totally real polynomials

$|(A+B)(X)|=o(X)$ if $|A(X)|=O(X^{1/2})$ and $|B(X)|=O(X^{1/2})$?

Evaluation of hypergeometric type continued fraction

Conflicting notation for periods of elliptic functions

Partial fraction expansions of meromorphic functions