User Andrea Antinucci - MathOverflow

Andrea Antinucci

Member for 1 year, 1 month
Last seen more than a week ago

sissa.it/tpp/…
Trieste

Network profile

19 Questions

Score Activity Newest Views

8 votes

1 answer

397 views

Trivial group cohomology induces trivial cohomology of subgroups

asked Aug 5 at 12:48

7 votes

1 answer

295 views

Pontryagin dual of a group-cohomology class

asked Jul 10 at 11:18

6 votes

1 answer

373 views

Is there a clear pattern for the degree $2n$ cohomology group of the $n$'th Eilenberg-MacLane space?

asked Jul 11 at 19:03

6 votes

0 answers

115 views

State-sum for 4d TQFT from fusion 2-categories and invariants of Morita equiavalence classes beyond Drinfeld center

asked May 15 at 21:34

5 votes

1 answer

322 views

Computation of the linking invariant on Lens spaces

asked May 14 at 14:41

5 votes

0 answers

322 views

Is there a simple sufficient condition to add to $f_=g_$ implying that $f$ and $g$ are homotopic?

asked May 16 at 15:32

4 votes

1 answer

195 views

Quadratic refinements of a bilinear form on finite abelian groups

asked Aug 4 at 10:32

4 votes

1 answer

191 views

Projective representations of a finite abelian group

asked Aug 5 at 9:43

4 votes

1 answer

311 views

When the Pontryagin square is an even class?

asked May 23 at 11:59

3 votes

2 answers

595 views

Does the cohomology Bockstein homomorphism map to the homology Bockstein homomorphism under Poincarè duality?

asked May 15 at 8:58

3 votes

1 answer

109 views

Linking form for homology with general coefficients

asked May 15 at 18:25

3 votes

3 answers

343 views

Pairing between cohomology and the image of the Hurewicz homomorphism

asked May 16 at 16:54

3 votes

0 answers

101 views

Is there a simple explicit expression of the Pontryagin square in terms of the cup product on a spin 4-manifold?

asked Jun 27 at 13:00

2 votes

1 answer

199 views

Explicit 3-cocycle of group cohomology of dihedral group and generalization to other semidirect products

asked Jun 15 at 15:58

2 votes

0 answers

160 views

Decomposition of finite abelian groups of even order if there is an involution

asked May 16 at 9:54

2 votes

0 answers

102 views

Triple insersection number of a surface in three-manifolds

asked May 24 at 14:10

1 vote

0 answers

115 views

Cohomology of the classifying space of a semidirect product, and some specific examples with cyclic groups

asked May 31 at 15:36

1 vote

1 answer

168 views

A map in group cohomology from $H^n(G,G^{\vee})$ to $H^{n+1}(G,U(1))$

asked May 17 at 10:12

0 votes

1 answer

189 views

Are these two natural cohomology classes of a manifold constructed from a 1-cochain and a group extension equal?

asked Jun 3 at 10:53