Submission: 2012, Feb 24
Following up on our earlier work (preprint 399) and the work of N. Karpenko and A. Merkurjev, we study the essential p-dimension of linear algebraic groups G whose connected component G^0 is a torus.
2010 Mathematics Subject Classification: 20G15, 11E72
Keywords and Phrases: Essential dimension, algebraic torus, twisted finite group, generically free representation
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