Étale Chern Classes at the Prime 2

Part of the NATO ASI Series book series (ASIC, volume 407)


Let A be a commutative ring and q a power of 2. We investigate the étale Chern classes
$${c_{ik}}:{K_n}\left( {A;{\Bbb Z}/q} \right) \to H_{et}^k\left( {A;\mu _q^{ \otimes i}} \right)$$
which are defined whenever i ≥ 1 and n + k = 2i. These are group homomorphisms except when n = 2 and q is even. The usual product formula for c ik ({a,b}) remains valid, except when q = 2 and i ≥ 3, when there is a correction term.


Direct Summand Commutative Ring Chern Class Number Field Group Homomorphism 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer Science+Business Media Dordrecht 1993

Authors and Affiliations

  1. 1.Department of MathematicsRutgers UniversityNew BrunswickUSA

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