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arXiv · 1407.1902

Restricted Lie algebras with maximal 0-PIM

Jörg Feldvoss·Salvatore Siciliano·Thomas Weigel
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Abstract

In this paper we show that the projective cover of the trivial irreducible module of a finite-dimensional solvable restricted Lie algebra is induced from the one-dimensional trivial module of a maximal torus. As a consequence, we obtain that the number of the isomorphism classes of irreducible modules with a fixed p-character for a finite-dimensional solvable restricted Lie algebra L is bounded above by p^MT(L), where MT(L) denotes the largest dimension of a torus in L. Finally, we prove that in characteristic p>3 the projective cover of the trivial irreducible L-module is only induced from the one-dimensional trivial module of a torus of maximal dimension if L is solvable.

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Jörg Feldvoss, Salvatore Siciliano, Thomas Weigel. 2014-07-07. Restricted Lie algebras with maximal 0-PIM. https://arxiv.org/abs/1407.1902

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