User Shimrod

3 votes

1 answer

118 views

Quadratic orders embedded in matrices

asked May 28, 2019 at 16:10

3 votes

0 answers

176 views

Abelianess of $K(j(E))$

asked May 3, 2019 at 15:48

3 votes

1 answer

333 views

Siegel's bad character

asked Apr 2, 2020 at 11:58

3 votes

1 answer

265 views

Modular form not meromorphic at $\infty$

asked Mar 28, 2021 at 16:49

3 votes

1 answer

164 views

Why an isogeny induces a surjection between points over maximal unramified extension?

asked Nov 1, 2022 at 21:40

3 votes

1 answer

237 views

Is this Siegel's formula correct?

asked Mar 21, 2020 at 16:05

2 votes

0 answers

136 views

Reference for $2$-by-$2$ integer matrices

asked May 14, 2021 at 15:11

2 votes

0 answers

131 views

The field generated by the torsion points of an elliptic curve

asked Sep 19, 2019 at 18:56

2 votes

0 answers

70 views

Centralizers of Cartan subgroups II

asked Apr 8, 2019 at 11:10

2 votes

0 answers

87 views

Rational expression for $j$

asked Apr 27, 2019 at 19:04

2 votes

1 answer

211 views

Norms of elements in a quadratic order - can you do it elementarily?

asked May 29, 2019 at 19:20

2 votes

0 answers

292 views

Zagier's algebraicity of singular moduli

asked May 20, 2018 at 23:19

2 votes

0 answers

126 views

Expressing modular functions of level 9 and 32 as rational functions

asked Aug 7, 2018 at 23:22

2 votes

1 answer

596 views

Twisted modular equation

asked Aug 9, 2018 at 15:48

2 votes

1 answer

174 views

Centralizers of Cartan subgroups

asked Apr 4, 2019 at 21:13

1 vote

0 answers

130 views

Centralizers of Cartan subgroup III

asked Apr 20, 2019 at 12:50

1 vote

0 answers

54 views

Double cosets and the Weber function

asked May 10, 2019 at 8:25

1 vote

0 answers

147 views

Lang's proof of the Shimura's exact sequence

asked Oct 10, 2019 at 22:23

1 vote

0 answers

76 views

Modular functions and integral closure of a valuation ring

asked Oct 17, 2019 at 11:24

1 vote

0 answers

95 views

Zeros of modular functions and automorphisms

asked Sep 17, 2019 at 22:48

0 votes

0 answers

92 views

Meromorphic functions on a modular curves of genus $0$ that take each value exactly once

asked Jun 7, 2020 at 20:31

0 votes

1 answer

88 views

Congruence subgroups and translations

asked May 8, 2019 at 0:50

0 votes

0 answers

2k views

Definition of an invariant differential of an elliptic curve

asked Jun 20, 2019 at 13:25

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53 Questions

Quadratic orders embedded in matrices

Abelianess of $K(j(E))$

Siegel's bad character

Modular form not meromorphic at $\infty$

Why an isogeny induces a surjection between points over maximal unramified extension?

Is this Siegel's formula correct?

Reference for $2$-by-$2$ integer matrices

The field generated by the torsion points of an elliptic curve

Centralizers of Cartan subgroups II

Rational expression for $j$

Norms of elements in a quadratic order - can you do it elementarily?

Zagier's algebraicity of singular moduli

Expressing modular functions of level 9 and 32 as rational functions

Twisted modular equation

Centralizers of Cartan subgroups

Centralizers of Cartan subgroup III

Double cosets and the Weber function

Lang's proof of the Shimura's exact sequence

Modular functions and integral closure of a valuation ring

Zeros of modular functions and automorphisms

Meromorphic functions on a modular curves of genus $0$ that take each value exactly once

Congruence subgroups and translations

Definition of an invariant differential of an elliptic curve