Cohomological invariants of Jordan algebras with frames

MacDonald, Mark (2010) Cohomological invariants of Jordan algebras with frames. Journal of Algebra, 323 (6). pp. 1665-1677. ISSN 0021-8693

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In a previous paper the author determined all possible cohomological invariants of Aut(J)-torsors in Galois cohomology with mod 2 coefficients, where J is a split central simple Jordan algebra of odd degree n⩾3. In the present paper we extend these results to a larger class of groups indexed by r=0, 1, 2 or 3, and ni positive integers that add to n⩾3 such that n1 is odd. We also give precise values for the essential dimension of these groups.

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Journal Article
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Journal of Algebra
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Deposited On:
12 Nov 2012 10:15
Last Modified:
21 Nov 2022 23:05