New posts in Group Cohomology

Abelianization of general linear group of a polynomial ring

Is $1\neq a\in Z(2.E_7(q))\cong Z_2$ a square element in $2.E_7(q)$?

How does the Steenrod algebra act on $\mathrm{H}^\bullet(p^{1+2}_+, \mathbb{F}_p)$?

An intuitive explanation for group cohomology via cochains?

Unifying "cohomology groups classify extensions" theorems

Actions of locally compact groups on the hyperfinite $II_1$ factor

Second Betti number of lattices in $\mathrm{SL}_3(\mathbf{R})$

primary decomposition for nonabelian cohomology of finite groups

Is the cohomology ring of a finite group computable?

Using Dunwoody's results on cohomological dimension to learn about a von Neumann regular group ring