User Peter Patzt

46 votes

3 answers

14k views

The set of differences for a set of positive Lebesgue measure

asked May 13, 2011 at 15:15

10 votes

3 answers

712 views

Continuity on a union

asked May 25, 2011 at 14:18

10 votes

1 answer

352 views

About the limit of a uniformly converging function sequence

asked May 25, 2011 at 16:24

10 votes

1 answer

210 views

Reciprocity for branching rules of $\mathrm{GL}_n(\mathbb C)$

asked Mar 11, 2014 at 10:22

8 votes

2 answers

487 views

Correspondence of representation theory between $\mathrm{GL}_n(\mathbb C)$ and $\mathrm U_n(\mathbb C)$

asked Mar 6, 2014 at 13:03

8 votes

1 answer

4k views

The integral closure of a finite separable field extension of the fraction field is finitely generated

asked Jul 8, 2011 at 14:02

7 votes

2 answers

522 views

Integer matrix with particular Jordan's form

asked Sep 14, 2011 at 11:58

7 votes

1 answer

2k views

Cauchy-Product of non-absolutely convergent series

asked Jun 10, 2012 at 9:21

7 votes

2 answers

2k views

A question concerning polynomial solvable by radicals

asked May 16, 2011 at 13:16

6 votes

3 answers

2k views

Krull dimension of $\mathbb Z[\sqrt 5]$ and integral ring extensions

asked Jan 10, 2012 at 10:06

6 votes

1 answer

220 views

Lang's "General Integrality Criterion"

asked May 13, 2011 at 21:21

5 votes

2 answers

553 views

Splitting fields of symmetric groups

asked Jun 17, 2013 at 17:54

4 votes

2 answers

211 views

$I$ semisimple + $R/I$ semisimple $\implies$ $R$ semisimple

asked Jul 5, 2013 at 14:41

4 votes

1 answer

490 views

Consequence of the branching rule of S_n representations

asked Oct 24, 2013 at 13:05

4 votes

2 answers

319 views

An integral ring extension that $B/M$ is not separable over $A/m$

asked Aug 16, 2011 at 14:23

3 votes

1 answer

139 views

necessary separability condition?

asked Jun 29, 2011 at 19:31

3 votes

1 answer

183 views

Confusing application of power residue reciprocity in Milne's CFT

asked Feb 7, 2014 at 14:13

3 votes

3 answers

158 views

nonsemisimple $k$-algebra

asked Apr 30, 2014 at 14:05

3 votes

0 answers

248 views

Tensor product via the diagonal action of a Hopf algebra

asked Jan 9, 2015 at 8:56

2 votes

1 answer

111 views

Group homology with coefficients vanish

asked Jan 22, 2015 at 18:52

2 votes

1 answer

527 views

Functoriality of group homology

asked Jan 27, 2015 at 15:11

2 votes

1 answer

108 views

Algebra isomorphisms

asked Jul 4, 2013 at 10:06

2 votes

1 answer

128 views

Criterion for Simpleness of Modules over an Algebra

asked May 30, 2013 at 12:05

2 votes

1 answer

100 views

If $K$ is Galois over $k$, so is $\mathfrak o_K/\mathfrak P$ over $\mathfrak o_k/\mathfrak p$

asked Jul 5, 2011 at 18:21

2 votes

2 answers

1k views

A ring and a quotient field with finite characteristic

asked Jun 29, 2011 at 18:46

1 vote

0 answers

88 views

Does the induced $K^G$-comodule correspond to the induced $KG$-module?

asked Jun 23, 2014 at 17:53

1 vote

0 answers

183 views

How do non-semisimple modules over $\mathbb C\mathrm{GL}_n(\mathbb C)$ look like?

asked Mar 11, 2014 at 10:02

0 votes

1 answer

51 views

Centralizer acting on the homology of a subgroup

asked Jun 10, 2015 at 8:27

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28 Questions

The set of differences for a set of positive Lebesgue measure

Continuity on a union

About the limit of a uniformly converging function sequence

Reciprocity for branching rules of $\mathrm{GL}_n(\mathbb C)$

Correspondence of representation theory between $\mathrm{GL}_n(\mathbb C)$ and $\mathrm U_n(\mathbb C)$

The integral closure of a finite separable field extension of the fraction field is finitely generated

Integer matrix with particular Jordan's form

Cauchy-Product of non-absolutely convergent series

A question concerning polynomial solvable by radicals

Krull dimension of $\mathbb Z[\sqrt 5]$ and integral ring extensions

Lang's "General Integrality Criterion"

Splitting fields of symmetric groups

$I$ semisimple + $R/I$ semisimple $\implies$ $R$ semisimple

Consequence of the branching rule of S_n representations

An integral ring extension that $B/M$ is not separable over $A/m$

necessary separability condition?

Confusing application of power residue reciprocity in Milne's CFT

nonsemisimple $k$-algebra

Tensor product via the diagonal action of a Hopf algebra

Group homology with coefficients vanish

Functoriality of group homology

Algebra isomorphisms

Criterion for Simpleness of Modules over an Algebra

If $K$ is Galois over $k$, so is $\mathfrak o_K/\mathfrak P$ over $\mathfrak o_k/\mathfrak p$

A ring and a quotient field with finite characteristic

Does the induced $K^G$-comodule correspond to the induced $KG$-module?

How do non-semisimple modules over $\mathbb C\mathrm{GL}_n(\mathbb C)$ look like?

Centralizer acting on the homology of a subgroup