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visits member for 2 years
seen Aug 1 at 15:16

Aug
17
awarded  Yearling
Aug
1
awarded  Custodian
Aug
1
reviewed Approve suggested edit on How are 'irreducible' elements called in module theory?
Jul
31
asked How are 'irreducible' elements called in module theory?
Jul
2
awarded  Curious
Apr
11
asked What do diagonal matrices do in irreducible repns of SL$_2(\mathbb{Z}/N\mathbb{Z})$?
Feb
24
revised GL$_2(\mathbb{Q}) Z_{\mathbb{R}}$ closed in GL$_2(\mathbb{A})$?
added 725 characters in body
Feb
24
asked GL$_2(\mathbb{Q}) Z_{\mathbb{R}}$ closed in GL$_2(\mathbb{A})$?
Feb
11
comment Relation: Modular Forms and hyperbolic geometry, or, why do they map from $\mathbb{H}$?
I must be even more stupid than I thought.
Feb
11
comment Relation: Modular Forms and hyperbolic geometry, or, why do they map from $\mathbb{H}$?
The behavior of some of the people on MO seems strange to me. Its like they interpret the question as "Why do modular forms slash correctly?" and give the answer "Duuh, idiot, because it is the definition!"... Of course I will need to study the history but the question was about whether there is a philosophical reason why it is precisely those functions belonging to this geometry, i.e. see the "equation" above. I have not read about modular forms for other geometries yet, so why does nobody use this term / is there any research on this? If this question is not suitable for MO then
Feb
9
asked Relation: Modular Forms and hyperbolic geometry, or, why do they map from $\mathbb{H}$?
Jan
6
comment Stupid question about conductors/Dirichlet Characters
I did so. Thanks.
Jan
6
accepted Stupid question about conductors/Dirichlet Characters
Dec
12
awarded  Supporter
Dec
12
comment How can I prove formally that the projective plane is a Hausdorff space?
Great answer, I was interested in the same and found this using google. Thanks Makoto Kato!!!
Nov
4
accepted $\mathbb{Q}^*$ closed in the finite ideles?
Nov
4
comment $\mathbb{Q}^*$ closed in the finite ideles?
Ah ok, and then, since $\mathbb{A}_\text{fin}$ is an LCH group, $\mathbb{Q}^\times$ is automatically closed by groupprops.subwiki.org/wiki/Discrete_subgroup_implies_closed (and the construction of the symmetric square root can be found here: math.uh.edu/~vern/grouprepn.pdf, prop. 5.7). Weird. Thanks a lot!!
Nov
4
awarded  Yearling
Nov
4
asked $\mathbb{Q}^*$ closed in the finite ideles?
Jun
25
accepted Very basic question on continuous representations