Alain Valette's user avatar
Alain Valette's user avatar
Alain Valette's user avatar
Alain Valette
  • Member for 12 years, 11 months
  • Last seen more than a week ago
1 vote
Accepted

Fredholm $C^*$-algebras

8 votes

An introductory text on expanders

6 votes
Accepted

A question regarding Kadison-Kaplansky idempotent conjecture (A nearest group element $g$ to a nontrivial self adjoint unitary element u )

17 votes

What problem in pure mathematics required solution techniques from the widest range of math sub-disciplines?

6 votes

Morita equivalence base equivalence relation for discrete groups

4 votes
Accepted

Construct discrete series of SL(2,R) as kernel of twisted Dirac operators

1 vote

How does one calculate/estimate/guarantee the girth of a non-Abelian Cayley graph?

8 votes

Irreducible representation of $C^*(D_\infty)$, group $C^*$-algebra of an infinite dihedral group

21 votes
Accepted

Can the full and reduced group $C^*$-algebras be "noncanonically" isomorphic?

20 votes
Accepted

What is a "Ramanujan Graph"?

7 votes

About the roots of the matching polynomial

4 votes
Accepted

Spectral gap of unitary representation

2 votes

Learning about Lie groups

4 votes

Modern Mathematical Achievements Accessible to Undergraduates

5 votes
Accepted

Crossed Products by Permutation Groups

3 votes
Accepted

Fell topology in terms of distributions

6 votes
Accepted

The compact Lie group contains a finite subgroup $\mathbb{Z}_{n_1} \times \mathbb{Z}_{n_2} \times \mathbb{Z}_{n_3}$

37 votes

Least collaborative mathematician

4 votes

Does every irreducible Banach representation admit a $K$-finite vector?

7 votes

Gelfand representation and functional calculus applications beyond Functional Analysis

18 votes
Accepted

An expander (?) graph

13 votes

how do I withdraw my submitted paper?

4 votes

Is there an editors checklist for mathematics?

1 vote
Accepted

On the descent homomorphsim of Kasparov equivariant KK theory

2 votes
Accepted

Maximal nilpotent subgroups of SO(n,1)

6 votes

Dense subspaces in primitive ideals of C-star algebras

12 votes
Accepted

Are maximal connected semisimple subgroups automatically closed?

7 votes
Accepted

Injectivity of the Baum-Connes assembly map for locally compact groups

21 votes

Journals and other sources with "easy reading" papers?

5 votes
Accepted

Crossed product of a C*-algebra by a subgroup

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