ProV Logo
0
Vanishing of Degree 3 Cohomological Inva...
Black, Rebecca...

Free

Vanishing of Degree 3 Cohomological Invariants by Black, Rebecca ( Author )
Lemonjar Open Access
Australian National University
07-09-2023
For a complex algebraic variety $X$, we show that triviality of the sheaf cohomology group $H^0(X,\mathcal{H}^3)$ occurring on the second page of the Bloch-Ogus spectral sequence follows from a condition on the integral Chow group $CH^2X$ and the integral cohomology group $H^3(X, Z)$. In the case that $X$ is an appropriate approximation to the classifying stack $BG$ of a finite $p$-group $G$, this result states that the group $G$ has no degree three cohomological invariants. As a corollary we show that the nonabelian groups of order $p^3$ for odd prime $p$ have no degree three cohomological invariants.
-
Article
pdf
29.34 KB
English
-
MYR 0.01
-
http://arxiv.org/abs/1502.05965
Share this eBook