Question

Consider more cusps in modular form?

score 61 · Answer 1 · 2026-04-14 00:47:36

61

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Consider more cusps in modular form?

Published on 14 Apr 2026 - 0:47

score 160 · Answer 2 · 2026-04-11 03:02:17

160

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Generating function for sum of two squares is a modular form

Published on 11 Apr 2026 - 3:02

score 290 · Answer 3 · 2026-04-15 07:25:35

If $f$ is a modular form and $y^{k/2}f$ stays bounded as $y\rightarrow \infty$, its constant Fourier coefficients at the cusps are zero

score 395 · Answer 4 · 2026-05-10 17:57:16

395

Views

Theta function squared is a weight $1$ modular form

Published on 10 May 2026 - 17:57

score 276 · Answer 5 · 2026-04-10 05:50:48

276

Views

Cusp form becomes a bounded function on $\operatorname{SL}_2(\mathbb R)$

Published on 10 Apr 2026 - 5:50

score 86 · Answer 6 · 2026-04-15 08:35:24

86

Views

For a cusp modular form of weight $k$, what is remarkable about $y^{k/2}f$ staying bounded as $y\rightarrow \infty$?

Published on 15 Apr 2026 - 8:35

score 33 · Answer 7 · 2026-04-13 12:28:32

33

Views

Linear relation between theta functions $\theta(z;u) \in S_8(\Gamma_0(4))$?

Published on 13 Apr 2026 - 12:28

score 78 · Answer 8 · 2026-04-15 12:23:40

78

Views

Computation of $\Phi(T,[\gamma])$ in a paper of Poonen and Rodriguez-Villegas

Published on 15 Apr 2026 - 12:23

score 171 · Answer 9 · 2026-05-10 12:53:28

171

Views

Test vector for local zeta integral with ramified character

Published on 10 May 2026 - 12:53

score 201 · Answer 10 · 2026-04-13 06:55:25

201

Views

Cusps of congruence subgroup

Published on 13 Apr 2026 - 6:55

score 219 · Answer 11 · 2026-04-13 16:20:12

219

Views

Why aren't holomorphic modular forms bounded?

Published on 13 Apr 2026 - 16:20

score 355 · Answer 12 · 2026-04-14 05:32:32

355

Views

What are all the subgroups of SL_2(Z)?

Published on 14 Apr 2026 - 5:32

score 47 · Answer 13 · 2026-04-16 06:09:05

47

Views

The index of $\{\pm 1\}$ in $\gamma^{-1}\Gamma_0(N)\gamma$

Published on 16 Apr 2026 - 6:09

score 306 · Answer 14 · 2026-04-12 16:23:25

306

Views

Decomposing the space of modular forms into $\chi$-eigenspaces via representation theory

Published on 12 Apr 2026 - 16:23

score 70 · Answer 15 · 2026-05-11 09:26:51

70

Views

Simple question about Hecke operators for the adeles

Published on 11 May 2026 - 9:26

List Question

Consider more cusps in modular form?

Generating function for sum of two squares is a modular form

If $f$ is a modular form and $y^{k/2}f$ stays bounded as $y\rightarrow \infty$, its constant Fourier coefficients at the cusps are zero

Theta function squared is a weight $1$ modular form

Cusp form becomes a bounded function on $\operatorname{SL}_2(\mathbb R)$

For a cusp modular form of weight $k$, what is remarkable about $y^{k/2}f$ staying bounded as $y\rightarrow \infty$?

Linear relation between theta functions $\theta(z;u) \in S_8(\Gamma_0(4))$?

Computation of $\Phi(T,[\gamma])$ in a paper of Poonen and Rodriguez-Villegas

Test vector for local zeta integral with ramified character

Cusps of congruence subgroup

Why aren't holomorphic modular forms bounded?

What are all the subgroups of SL_2(Z)?

The index of $\{\pm 1\}$ in $\gamma^{-1}\Gamma_0(N)\gamma$

Decomposing the space of modular forms into $\chi$-eigenspaces via representation theory

Simple question about Hecke operators for the adeles

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