wanshunwong@gmail.com

Submission: 2012, Nov 20

In this paper we establish different ways to compute the period of a generic torsor of a group of multiplicative type. We also study the relationships among the periods of generic torsors of Q, T and W, where Q is a group of multiplicative type, T is the maximal subtorus of Q and W is the maximal finite quotient group of Q.

2010 Mathematics Subject Classification: 11E72, 20G15

Keywords and Phrases: Generic Torsor, Galois Cohomology, Groups of Multiplicative Type

Full text: dvi.gz 23 k, dvi 54 k, ps.gz 837 k, pdf.gz 132 k, pdf 153 k.

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