126

Answers
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4
Conjugacy classes and reduced group $C^*$-algebra of an amenable group
4
mapping space between classifying spaces
4
pointwise ergodic theorem and mean sojourn time
9
Centraliser of the complex conjugation in the absolute Galois group
2
How similar/different are dense subgroups of a compact group.
6
Fuglede-Kadison determinants in $L(\mathbb{F}_2)$
2
Which polynomials are Fricke polynomials ?
4
Kuiper’s theorem via approximation
3
Commutator Subgroup - Group Theory
4
On infinite-dimensional unitary representations of Kazhdan groups
10
No injective groups with more than one element?
5
Second homotopy group of Cayley complex
4
Additive integer-valued functions on the module category
8
non-Identity operator on a separable Hilbert space
6
Regarding Cayley Graphs of Property (T) Groups
5
Simultaneous decomposition of three projectors
1
vector balancing problem
4
Is there an i.c.c. nonamenable simple group that is inner amenable?
8
Are semi-direct products categorical limits?
4
Amenable groups of deficiency $1$
6
Generalization of finitely generated, finitely presented modules?
2
Return probabilities for random walks on infinite Schreier graphs
4
Are acyclic subcomplexes of finite contractible 2-complexes contractible?
11
Is the Euler characteristic of aspherical connected 2-complexes at most 1? (No!) What can be said about subcomplexes of 2-complexes deformation retractible onto graphs.
2
Do subalgebras of C(X) admit a description in terms of the compact Hausdorff space X?
3
A matrix algebra has no deformations?
36
morphism from a compact group to Z ?
6
Does left-invertible imply invertible in full group C*-algebras (discrete case)?
12
Is $SU(\infty)$ amenable?
11
residually finite-by-$\mathbb{Z}$ groups are residually finite (2)
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