Garibaldi, Ryan S.University of California, San Diego
Author
Tignol, Jean-PierreUCLouvain
Author
Wadsworth, Adrian R.University of California, San Diego
Author
Abstract
If (A,s) is a central simple algebra of even degree with orthogonal involution, then for the map of Galois cohomology sets from H^1(F, SO(A,s)) to the 2-torsion in the Brauer group of F, we describe fully the image of a given element of H^1(F, SO(A,s)) and prove that this description is correct in two different ways. As an easy consequence, we derive a result of Bartels.
Garibaldi, R. S., Tignol, J.-P., & Wadsworth, A. R. (1997). Galois cohomology of special orthogonal groups. Manuscripta Mathematica, 93(2), 247-266. https://doi.org/10.1007/BF02677469 (Original work published 1997)