Question

Understanding the proof 3

score 81 · Answer 1 · 2026-04-08 17:48:16

81

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Understanding the proof 3

Published on 08 Apr 2026 - 17:48

score 258 · Answer 2 · 2026-04-14 20:47:20

258

Views

Modular functions of weight 0 and the J invariant

Published on 14 Apr 2026 - 20:47

score 306 · Answer 3 · 2026-05-10 19:45:59

306

Views

Regarding definitions of modular functions and modular forms

Published on 10 May 2026 - 19:45

score 247 · Answer 4 · 2026-04-28 11:17:18

247

Views

Left and right coset representatives of $\text{SL}_2(\mathbb{Z})$ action

Published on 28 Apr 2026 - 11:17

score 181 · Answer 5 · 2026-05-10 18:58:16

181

Views

What do "orbits" look like?

Published on 10 May 2026 - 18:58

score 284 · Answer 6 · 2026-05-10 18:28:07

284

Views

Prove j(E) is an integer for an elliptic curve with CM by a quadratic field of class number 1

Published on 10 May 2026 - 18:28

score 343 · Answer 7 · 2026-04-13 06:11:43

343

Views

the generators of the modular group are S and T

Published on 13 Apr 2026 - 6:11

score 97 · Answer 8 · 2026-04-14 07:56:35

97

Views

Calculating the values of $S(e^{-\frac{\pi}{25}})$ and $S(e^{-5\pi})$.

Published on 14 Apr 2026 - 7:56

score 108 · Answer 9 · 2026-04-15 11:15:28

108

Views

Why is the map $\mathrm{SL}_2(\mathbb{R})/\mathrm{SO}(2) \rightarrow \mathbb{H} : A \mapsto Ai$ injective?

Published on 15 Apr 2026 - 11:15

score 51 · Answer 10 · 2026-05-10 23:34:35

51

Views

Help me understand the translation between homogeneous elliptic functions and modular functions

Published on 10 May 2026 - 23:34

score 61 · Answer 11 · 2026-05-07 08:10:13

61

Views

If $G$ is a group acting on a set $H$, what does it mean for two elements of set $H$ to be "congruent modulo $G$"?

Published on 07 May 2026 - 8:10

score 86 · Answer 12 · 2026-05-10 15:01:51

86

Views

Modular form that takes value $1$ at a particular cusp, but vanishes at the remaining cusps

Published on 10 May 2026 - 15:01

score 98 · Answer 13 · 2026-05-10 15:50:48

98

Views

Finding a basis for the Eisenstein space $\mathcal{E}_1(12,\chi)$

Published on 10 May 2026 - 15:50

score 495 · Answer 14 · 2026-04-14 10:48:08

495

Views

The order of a modular form is invariant under the action of $SL_2(\mathbb Z)$

Published on 14 Apr 2026 - 10:48

score 110 · Answer 15 · 2026-04-15 06:37:39

110

Views

For the divisor function $\sigma_k(n)=\sum_{d|n}d^k$, is there any definition for $\sigma_k(0)$?

Published on 15 Apr 2026 - 6:37

List Question

Understanding the proof 3

Modular functions of weight 0 and the J invariant

Regarding definitions of modular functions and modular forms

Left and right coset representatives of $\text{SL}_2(\mathbb{Z})$ action

What do "orbits" look like?

Prove j(E) is an integer for an elliptic curve with CM by a quadratic field of class number 1

the generators of the modular group are S and T

Calculating the values of $S(e^{-\frac{\pi}{25}})$ and $S(e^{-5\pi})$.

Why is the map $\mathrm{SL}_2(\mathbb{R})/\mathrm{SO}(2) \rightarrow \mathbb{H} : A \mapsto Ai$ injective?

Help me understand the translation between homogeneous elliptic functions and modular functions

If $G$ is a group acting on a set $H$, what does it mean for two elements of set $H$ to be "congruent modulo $G$"?

Modular form that takes value $1$ at a particular cusp, but vanishes at the remaining cusps

Finding a basis for the Eisenstein space $\mathcal{E}_1(12,\chi)$

The order of a modular form is invariant under the action of $SL_2(\mathbb Z)$

For the divisor function $\sigma_k(n)=\sum_{d|n}d^k$, is there any definition for $\sigma_k(0)$?

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