User worldreporter

9 votes

1 answer

372 views

Simplicity of group $C^\ast$-algebra implies fullness of group-von Neumann algebra?

asked Apr 8, 2021 at 8:32

8 votes

1 answer

724 views

Role of the UCT problem in classification theory for C*-algebras

asked Oct 9, 2017 at 9:48

6 votes

1 answer

325 views

Direct proof of "Nuclear implies $C_{red}^(G) \cong C^(G)$"

asked Oct 19, 2018 at 13:26

6 votes

1 answer

221 views

Vanishing of certain coefficients coming from Coxeter groups

asked Jun 20, 2019 at 19:00

6 votes

1 answer

189 views

Starting letters of equivalent infinite geodesic paths of hyperbolic Coxeter groups

asked Aug 13, 2019 at 12:33

6 votes

2 answers

556 views

Endomorphisms of the Cuntz algebra

asked Oct 30, 2020 at 11:00

5 votes

1 answer

208 views

Cartan subalgebras in the group algebras of virtually abelian groups

asked Dec 20, 2018 at 10:02

4 votes

1 answer

128 views

Copies of $\mathbb{Z}\oplus \mathbb{F}_2$ in non-affine, irreducible Coxeter groups

asked Mar 6, 2020 at 10:11

4 votes

1 answer

261 views

Uniform Roe algebra of virtually abelian group is type I C*-algebra?

asked Oct 9, 2019 at 12:16

3 votes

1 answer

237 views

Reference request: Finite (multi-parameter) Iwahori-Hecke algebras are pairwise isomorphic

asked Oct 22, 2019 at 19:50

3 votes

1 answer

161 views

Decompositions of Coxeter groups into trees of groups

asked Oct 23, 2020 at 9:05

3 votes

1 answer

103 views

Sequence in -algebra with different limits for two C-norms?

asked Oct 17, 2018 at 14:36

3 votes

1 answer

130 views

C*-algebras: Existence of an element inducing an injective map

asked Apr 10, 2018 at 19:07

2 votes

2 answers

398 views

Norm of two operators on $l^2(\mathbb{Z}_{2}*\mathbb{Z}_{2})$ different

asked May 16, 2019 at 13:33

2 votes

1 answer

267 views

Characterization of $C^{*}$-algebra norms via conditional expectations

asked Jul 15, 2017 at 15:32

2 votes

1 answer

168 views

Crossed products and unitaries implementing $\mathbb{Z}_n$-actions

asked Aug 20, 2017 at 12:28

2 votes

0 answers

126 views

(Proper) length functions on $\mathbb{Z}$

asked Jul 29, 2022 at 7:26

1 vote

1 answer

190 views

Commutative subalgebra of Iwahori-Hecke algebra

asked Jan 14, 2022 at 19:10

1 vote

1 answer

178 views

Matrix norm inequality for C*-Algebras [closed]

asked May 22, 2016 at 16:03

1 vote

1 answer

607 views

Radius of convergence of multivariate Taylor series

asked Nov 12, 2019 at 12:24

0 votes

1 answer

2k views

Set of critical values is compact [closed]

asked Dec 30, 2014 at 10:51

0 votes

1 answer

75 views

Existence of certain subsemigroups of $C(K, K)$ for compact Hausdorff spaces $K$

asked May 3, 2018 at 14:46

-1 votes

1 answer

168 views

Følner sequences of the integers

asked Oct 21, 2022 at 8:50

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23 Questions

Simplicity of group $C^\ast$-algebra implies fullness of group-von Neumann algebra?

Role of the UCT problem in classification theory for C*-algebras

Direct proof of "Nuclear implies $C_{red}^(G) \cong C^(G)$"

Vanishing of certain coefficients coming from Coxeter groups

Starting letters of equivalent infinite geodesic paths of hyperbolic Coxeter groups

Endomorphisms of the Cuntz algebra

Cartan subalgebras in the group algebras of virtually abelian groups

Copies of $\mathbb{Z}\oplus \mathbb{F}_2$ in non-affine, irreducible Coxeter groups

Uniform Roe algebra of virtually abelian group is type I C*-algebra?

Reference request: Finite (multi-parameter) Iwahori-Hecke algebras are pairwise isomorphic

Decompositions of Coxeter groups into trees of groups

Sequence in -algebra with different limits for two C-norms?

C*-algebras: Existence of an element inducing an injective map

Norm of two operators on $l^2(\mathbb{Z}_{2}*\mathbb{Z}_{2})$ different

Characterization of $C^{*}$-algebra norms via conditional expectations

Crossed products and unitaries implementing $\mathbb{Z}_n$-actions

(Proper) length functions on $\mathbb{Z}$

Commutative subalgebra of Iwahori-Hecke algebra

Matrix norm inequality for C*-Algebras [closed]

Radius of convergence of multivariate Taylor series

Set of critical values is compact [closed]

Existence of certain subsemigroups of $C(K, K)$ for compact Hausdorff spaces $K$

Følner sequences of the integers