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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 1989 Volume 180, Number 4, Pages 456–468 (Mi sm2981)

This article is cited in 9 papers

Cohomology of truncated coinduced representations of Lie algebras of positive characteristic

A. S. Dzhumadil'daev


Abstract: The author proves that for any $n$-dimensional Lie algebra of characteristic $p>0$ and any $k$, $0\leqslant k\leqslant n$, there exists a finite-dimensional module with nontrivial $k$-cohomology; the nontrivial cocycles of such modules become trivial under some finite-dimensional extension. He also obtains a criterion for the Lie algebra to be nilpotent in terms of irreducible modules with nontrivial cohomology. The proof of these facts is based on a generalization of Shapiro's lemma. The truncated induced and coinduced representations are shown to be the same thing.
Bibliography: 22 titles.

UDC: 512.664.3

MSC: Primary 17B56; Secondary 17B35, 17B10

Received: 22.01.1987


 English version:
Mathematics of the USSR-Sbornik, 1990, 66:2, 461–473

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