User Jiang

15 votes

4 answers

6k views

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

asked Apr 7, 2011 at 15:49

14 votes

2 answers

549 views

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

asked Jul 20, 2013 at 23:13

11 votes

2 answers

1k views

Group theory required for further study in von Neumann algebra

asked Mar 23, 2011 at 16:05

9 votes

1 answer

335 views

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

asked Nov 17, 2014 at 21:16

8 votes

1 answer

441 views

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

asked Aug 29, 2013 at 14:52

8 votes

5 answers

3k views

Alternative for Kadison and Ringrose's book

asked Oct 18, 2010 at 16:13

7 votes

2 answers

810 views

Differential ideal membership problem

asked Nov 29, 2010 at 9:55

6 votes

1 answer

753 views

Nontrivial criteria for polynomials to have no common zeros?

asked Dec 11, 2010 at 4:17

6 votes

1 answer

476 views

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

asked Aug 11, 2013 at 14:35

5 votes

1 answer

576 views

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

asked Nov 30, 2012 at 4:39

5 votes

0 answers

241 views

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

asked Apr 5, 2013 at 16:31

5 votes

0 answers

185 views

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

asked Mar 8, 2019 at 12:52

4 votes

1 answer

205 views

symmetric measurable 2-cocycles on compact abelian groups vanish?

asked Aug 27, 2015 at 12:47

3 votes

0 answers

220 views

torsion free for the 2nd cohomology group?

asked Nov 11, 2014 at 11:02

3 votes

2 answers

470 views

noncommutative polynomials equality

asked Oct 25, 2013 at 17:49

3 votes

1 answer

700 views

vanishing higher cohomology group for property T group?

asked Aug 8, 2014 at 13:06

2 votes

0 answers

137 views

seek another proof of a result in Fourier analysis

asked Jul 3, 2014 at 20:13

2 votes

1 answer

280 views

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

asked Oct 16, 2013 at 4:02

2 votes

1 answer

184 views

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

asked Jan 23, 2011 at 11:24

2 votes

2 answers

1k views

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

asked Nov 24, 2010 at 14:49

2 votes

2 answers

700 views

Are there good inequalities on the norm?

asked Sep 17, 2010 at 16:13

1 vote

0 answers

127 views

clarify a question in group cohomology

asked Apr 12, 2013 at 19:49

1 vote

1 answer

257 views

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

asked Nov 13, 2013 at 3:46

1 vote

2 answers

177 views

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

asked Jun 29, 2011 at 14:22

1 vote

0 answers

221 views

Reference on calculation of 2nd cohomology group

asked Aug 21, 2014 at 13:54

1 vote

0 answers

181 views

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

asked Jul 24, 2015 at 12:06

0 votes

0 answers

105 views

specific qi on free groups

asked Dec 1, 2016 at 14:19

0 votes

1 answer

440 views

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

asked Dec 3, 2013 at 4:37

0 votes

1 answer

216 views

Find a special element in group algebra

asked May 30, 2013 at 7:25

0 votes

1 answer

182 views

the maximal length of a special dicksonian sequence

asked May 6, 2011 at 5:12

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31 Questions

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

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

Group theory required for further study in von Neumann algebra

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

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

Alternative for Kadison and Ringrose's book

Differential ideal membership problem

Nontrivial criteria for polynomials to have no common zeros?

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

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

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

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

symmetric measurable 2-cocycles on compact abelian groups vanish?

torsion free for the 2nd cohomology group?

noncommutative polynomials equality

vanishing higher cohomology group for property T group?

seek another proof of a result in Fourier analysis

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

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

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

Are there good inequalities on the norm?

clarify a question in group cohomology

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

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

Reference on calculation of 2nd cohomology group

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

specific qi on free groups

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

Find a special element in group algebra

the maximal length of a special dicksonian sequence