User Marc Palm

7

13

votes

2

answers

2k

views

What is the Pontryagin dual of the rationals?

number-theory

Jun 29 '11 at 16:03 Community♦ 1

7

12

votes

2

answers

2k

views

When are two elements conjugated in GL(2), but not in SL(2)

linear-algebra abstract-algebra

Feb 13 '13 at 12:21 Andreas Caranti 63k

5

12

votes

1

answer

2k

views

Radius of convergence of power series

reference-request complex-analysis power-series

Jun 24 '11 at 8:38 Marc Palm 4,206

4

9

votes

2

answers

2k

views

Power series without analytic continuation

complex-analysis power-series

Jun 22 '11 at 15:00 t.b. 70.5k

2

7

votes

2

answers

323

views

Does $\log p$ make sense in a finite extension of $\mathbb{Q}_q$?

number-theory p-adic-number-theory

Apr 15 '15 at 12:44 Jyrki Lahtonen 119k

5

7

votes

1

answer

1k

views

Representation theory of $GL(2,\mathbb{C})$

representation-theory

Apr 15 '12 at 12:07 Matt E 113k

2

7

votes

1

answer

628

views

Direct sum $\Rightarrow$ Direct Integral, Tensor product $\Rightarrow$?

vector-spaces hilbert-spaces tensor-products

Jul 26 '11 at 15:21 t.b. 70.5k

6

votes

2

answers

164

views

In what locally compact abelian groups does $\mathbb{Q}$ embed densely?

number-theory abelian-groups harmonic-analysis

Apr 13 '19 at 16:58 Wayne 581

3

6

votes

1

answer

2k

views

Normal subgroups of the symmetric group $S_N$

group-theory representation-theory finite-groups symmetric-groups

Aug 6 '15 at 19:56 6005 42k

3

6

votes

3

answers

558

views

Conjugacy classes in group extensions

group-theory finite-groups group-extensions

Jul 20 '13 at 22:49 Alexander Gruber♦ 25.7k

1

6

votes

2

answers

365

views

Reference request: GL(n)

representation-theory lie-groups

Apr 3 '12 at 17:49 Oleg Gittsovich 116

2

6

votes

1

answer

871

views

irreducible polynomials over the $p$ adic number

number-theory

Dec 20 '11 at 0:23 MichalisN 5,037

2

5

votes

2

answers

2k

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Induction from normal subgroups

group-theory reference-request representation-theory finite-groups

Nov 17 '13 at 12:28 Milan 29

2

5

votes

1

answer

289

views

Extending Galois automorphism to group automorphism

abstract-algebra number-theory algebraic-geometry algebraic-number-theory automorphic-forms

Apr 25 '12 at 7:51 Marc Palm 4,206

1

5

votes

2

answers

224

views

Changing the manifold, preserving the discrete spectrum

geometry differential-geometry ordinary-differential-equations manifolds spectral-theory

Aug 11 '11 at 13:20 paul garrett 37.7k

5

votes

1

answer

188

views

Equidistribution results vs transcendence degree

number-theory analytic-number-theory ergodic-theory equidistribution

Jun 30 '11 at 5:10 Gerry Myerson 162k

1

5

votes

1

answer

229

views

What is a good number theoretic interpretation of primitive geodesics on the modular surface?

number-theory

Jun 25 '11 at 18:06 paul garrett 37.7k

2

4

votes

2

answers

801

views

Representation theory of $U(2)$

reference-request representation-theory

Aug 4 '19 at 12:49 JME 101

1

4

votes

2

answers

454

views

How often is an irreducible polynomial irreducible?

number-theory algebraic-number-theory

Apr 20 '12 at 12:13 David Loeffler 7,782

1

4

votes

1

answer

110

views

Can characters occur in automorphic representation

number-theory automorphic-forms

Apr 12 '12 at 22:37 paul garrett 37.7k

4

votes

1

answer

354

views

The dual of $C_0^k(X)$

functional-analysis vector-spaces

Nov 13 '11 at 19:28 Dirk 10.5k

1

3

votes

1

answer

199

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$ \int_0^\infty (1+t^2)^{-s} (1+it)^{s'} 2t \; d t.$

calculus integration definite-integrals improper-integrals

Jun 3 '17 at 22:49 Felix Marin 80.8k

3

votes

1

answer

398

views

Jordan decomposition/Levi decomposition in GL(n) in positive characteristic

abstract-algebra algebraic-geometry algebraic-groups

Aug 15 '14 at 15:39 Jason 11

3

votes

1

answer

280

views

Units in number fields with complex embeddings

number-theory algebraic-number-theory

Jul 20 '12 at 15:38 Arturo Magidin 320k

3

votes

1

answer

113

views

Where can I find rigorous statements about the spectral decomposition of reductive groups?

number-theory representation-theory automorphic-forms

Jun 28 '11 at 10:56 David Loeffler 7,782

1

3

votes

1

answer

87

views

Construction of representations

geometry group-theory representation-theory

Jun 8 '11 at 23:48 Pete L. Clark 88.9k

2

votes

1

answer

431

views

Strong approximation in function fields

number-theory reference-request algebraic-geometry

Oct 21 '13 at 9:03 Marc Palm 4,206

1

2

votes

1

answer

191

views

Does the induced representation always contain a non-trivial representation

finite-groups representation-theory

Oct 8 '13 at 14:29 paul garrett 37.7k

2

votes

1

answer

335

views

Limit of discrete series representation $GL(2,\mathbb{R})$

representation-theory lie-groups

Jul 22 '12 at 17:58 paul garrett 37.7k

1

2

votes

1

answer

115

views

Restriction representation to compact subgroup

representation-theory

Jun 1 '12 at 16:46 paul garrett 37.7k

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52 Questions

What is the Pontryagin dual of the rationals?

When are two elements conjugated in GL(2), but not in SL(2)

Radius of convergence of power series

Power series without analytic continuation

Does $\log p$ make sense in a finite extension of $\mathbb{Q}_q$?

Representation theory of $GL(2,\mathbb{C})$

Direct sum $\Rightarrow$ Direct Integral, Tensor product $\Rightarrow$?

In what locally compact abelian groups does $\mathbb{Q}$ embed densely?

Normal subgroups of the symmetric group $S_N$

Conjugacy classes in group extensions

Reference request: GL(n)

irreducible polynomials over the $p$ adic number

Induction from normal subgroups

Extending Galois automorphism to group automorphism

Changing the manifold, preserving the discrete spectrum

Equidistribution results vs transcendence degree

What is a good number theoretic interpretation of primitive geodesics on the modular surface?

Representation theory of $U(2)$

How often is an irreducible polynomial irreducible?

Can characters occur in automorphic representation

The dual of $C_0^k(X)$

$ \int_0^\infty (1+t^2)^{-s} (1+it)^{s'} 2t \; d t.$

Jordan decomposition/Levi decomposition in GL(n) in positive characteristic

Units in number fields with complex embeddings

Where can I find rigorous statements about the spectral decomposition of reductive groups?

Construction of representations

Strong approximation in function fields

Does the induced representation always contain a non-trivial representation

Limit of discrete series representation $GL(2,\mathbb{R})$

Restriction representation to compact subgroup