Cohomology of Restricted Lie Algebras

Details Cohomology of Restricted Lie Algebras Cohomology of Restricted Lie Algebras

2001-11-08

arxiv.org/abs/math/0111090v1

Mathematics

Representation Theory

Dissertation

Scientific paper

In this dissertation, we investigate the cohomology theory of restricted Lie algebras. The representation theory of restricted Lie algebras is reviewed including a description of the restricted universal enveloping algebra. In the case of an abelian restricted Lie algebra, we construct an augmented complex of free modules over the enveloping algebra that is exact in dimensions less than p and hence define the cohomology theory of these algebras in dimension less than p. In the non-abelian case, we explicitly construct cochain spaces for any coefficient module in dimensions less than 3, and give explicit formulas for the coboundary operators in these dimensions. The corresponding notions of the usual algebraic interpretations of ordinary low dimensional cohomology are defined and we show that our restricted cohomology spaces encode this information as well.

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