Alain Valette

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Name	Alain Valette
Member for	2 years
Seen	2 hours ago
Website	www2.unine.ch/alain.valette
Location	Neuchâtel, Switzerland
Age	54

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18

50

votes

2

answers

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How many relations of length $n$ can exists in a group without enforcing shorter relations?

gr.group-theory

oct 28 11 at 19:22 MathOverflow♦ 1●2●3

8

22

votes

6

answers

2k

views

Why are free groups residually finite?

gr.group-theory topological-groups profinite-groups

apr 8 12 at 2:24 Benjamin Steinberg 10.7k●1●14●49

8

18

votes

4

answers

1k

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Can $L^{2}$ be represented as a space of functions (not equivalence classes)?

fa.functional-analysis ca.analysis-and-odes sp.spectral-theory

jan 3 12 at 23:21 Keshav Srinivasan 520●2●10

6

16

votes

4

answers

879

views

A question on the integral of Hilbert valued functions

fa.functional-analysis

jun 8 11 at 13:30 Pietro Majer 19.7k●1●24●69

4

15

votes

2

answers

702

views

Groups of order $n$ with a character whose degree is at least $0.8\sqrt{n}$ (say)

gr.group-theory characters finite-groups

jun 23 11 at 23:15 Geoff Robinson 9,916●1●21●27

2

13

votes

1

answer

304

views

Is a reductive adelic group a Type I group?

automorphic-forms topological-groups unitary-representations

dec 14 at 18:17 GH 15.1k●1●33●55

2

11

votes

1

answer

311

views

To what extent can one prescribe degrees of irreducible representations of a group?

rt.representation-theory gr.group-theory reference-request

sep 12 11 at 19:57 Noah Snyder 11.3k●1●26●71

2

9

votes

3

answers

232

views

The identity element of a compact group is a limit point of any “polynomial sequence”

gn.general-topology ds.dynamical-systems nt.number-theory

oct 23 at 20:12 Asaf 654●3●5

1

8

votes

1

answer

601

views

Unbounded representations of groups

gr.group-theory rt.representation-theory unitary-representations

mar 30 at 19:17 Yves Cornulier 2,991●1●6●11

4

7

votes

2

answers

694

views

Free group actions on complex projective spaces

at.algebraic-topology

dec 4 11 at 16:33 Vitali Kapovitch 4,082●1●11●22

4

6

votes

0

answers

201

views

What are the relations in the unbounded model of K-homology?

kt.k-theory-homology fa.functional-analysis

jan 26 12 at 22:42 Johannes Ebert 11.5k●33●56

2

6

votes

2

answers

282

views

The relationship between Crofton formula and Radon transform.

integral-geometry integral-transforms

feb 10 12 at 14:51 Liviu Nicolaescu 11.4k●1●20●33

1

6

votes

0

answers

198

views

subgroups of higher rank lattices

arithmetic-groups lie-groups

feb 17 at 18:17 Alain Valette 6,429●14●26

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5

votes

0

answers

231

views

Sequence of graphs with small $\lambda_1$ (the smallest nonzero eigenvalue of a regular finite graph)

graph-theory laplacian

nov 11 11 at 23:17 Antoine 1,020●1●11

2

5

votes

3

answers

377

views

Ergodic action of a subgroup

ergodic-theory gr.group-theory

oct 5 at 23:46 Donald Robertson 71●3