arXiv math/03064362003-06-30math.KTmath.QA

The Chern-Galois character

Tomasz Brzezinski, Piotr M. Hajac

备注：: 4 pages, LaTeX

英文摘要：

Following the idea of Galois-type extensions and entwining structures, we define the notion of a principal extension of noncommutative algebras. We show that modules associated to such extensions via finite-dimensional corepresentations are finitely generated projective, and determine an explicit formula for the Chern character applied to the thus obtained modules.

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