Cohomological Invariants of Algebraic Tori

  • S. BLINSTEIN, A. MERKURJEV
  • Published 2012

Abstract

Let G be an algebraic group over a field F . As defined by Serre, a cohomological invariant of G of degree n with values in Q/Z(j) is a functorial in K collection of maps of sets H(K,G) −→ H ( K,Q/Z(j) ) for all field extensions K/F . We study the group of degree 3 invariants of an algebraic torus with values in Q/Z(2). In particular, we compute the group H… (More)

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