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Answers
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4
Amenability of groups
5
amenable equivalence relation generated by an action of a non-amenable group
7
Completely positive maps as “positive operators”
6
a question on Folner sets
9
Whether the system of matrix equations is always solvable
4
Journals similar to “Positivity”?
3
Amenability of groups in terms of a perturbation condition
7
Probability measure product space
8
Example of an infinite index subgroup of a non-amenable group whose normalizer is of non-zero finite index, and such that the Schreier graph is of subexponential growth
4
Does every normal subgroup appear as a kernel of an irreducible representation?
5
A 3*3 matrix space problem
10
Subgroups of U(M_n)
4
Positive extension of functionals on a subset of the state space of a $C^*$ algebra
3
A non-amenable group which is “almost amenable”
8
How hopficity is preserved under finite index?
6
derivation between two $C^{*}$ algebras
4
Does this norm inequality hold for projections onto the range of a sum of matrices?
5
Zero divisors in group algebras of torsion-free groups of length 3