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Jiang
  • Member for 13 years, 6 months
  • Last seen more than a month ago
14 votes
2 answers
546 views

$\mathbb{Z}G$ (left) Noetherian$\Rightarrow$ $\ell^1(G)$ is a flat (right) $\mathbb{Z}G$-module?

13 votes
4 answers
6k views

how to determine whether an ideal is prime or not by an algorithm

12 votes
2 answers
1k views

Group theory required for further study in von Neumann algebra

9 votes
1 answer
328 views

amenable + without $BS(m,n)$+finite $K(G,1)$implies virtually cyclic?

8 votes
1 answer
437 views

For $G=\mathbb{Z}^2\rtimes \mathbb{Z}$, $Spec(\mathbb{Z}G)$=?

8 votes
5 answers
3k views

Alternative for Kadison and Ringrose's book

7 votes
2 answers
799 views

Differential ideal membership problem

6 votes
1 answer
733 views

Nontrivial criteria for polynomials to have no common zeros?

6 votes
1 answer
448 views

growth rate of $\mathbb{Z}^2\rtimes_{\sigma} \mathbb{Z}$?

5 votes
1 answer
571 views

Fuglede-Kadison determinants in $L(\mathbb{F}_2)$

5 votes
0 answers
236 views

Find a lower bound for a pre-invariant $Fol(L(F_m), X_m)$

5 votes
0 answers
183 views

Any f.p. faithful simple module over a primitive group ring?

4 votes
1 answer
197 views

symmetric measurable 2-cocycles on compact abelian groups vanish?

3 votes
0 answers
217 views

torsion free for the 2nd cohomology group?

3 votes
2 answers
468 views

noncommutative polynomials equality

3 votes
1 answer
686 views

vanishing higher cohomology group for property T group?

2 votes
0 answers
137 views

seek another proof of a result in Fourier analysis

2 votes
1 answer
279 views

(efficient) method to test $\{n\alpha\}\not\in [A, B]\subset [0,1]$

2 votes
1 answer
181 views

Are there known quantitative descriptions of the fact that the common zero set of some polynomials is empty besides Nullstellensatz?

2 votes
2 answers
1k views

Does a conditional expectation from a von Neumann algebra to its center exist?

2 votes
2 answers
699 views

Are there good inequalities on the norm?

1 vote
0 answers
127 views

clarify a question in group cohomology

1 vote
1 answer
254 views

$Aut(\mathbb{Z}G)=?$ for $G=\mathbb{Z}^2\rtimes_n\mathbb{Z}$

1 vote
2 answers
177 views

Restriction on the coefficients for an operator in the free group factor $ L(\mathbb{F}_2) $

1 vote
0 answers
218 views

Reference on calculation of 2nd cohomology group

1 vote
0 answers
180 views

divisible 2nd cohomolgy group $H^2(G,\mathbb{Z}G)$

0 votes
0 answers
105 views

specific qi on free groups

0 votes
1 answer
426 views

finite index, self-normalizing subgroup of $F_2$ [closed]

0 votes
1 answer
215 views

Find a special element in group algebra

0 votes
1 answer
182 views

the maximal length of a special dicksonian sequence