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2 results on '"Invariant polynomial"'

1. The variety of nilpotent elements and invariant polynomial functions on the special algebra Sn.

Author

Wei, Junyan, Chang, Hao, and Lu, Xin

Subjects
*VARIETIES (Universal algebra), *NILPOTENT groups, *INVARIANTS (Mathematics), *POLYNOMIALS, *MATHEMATICAL functions, *LIE algebras
Abstract

In the study of the variety of nilpotent elements in a Lie algebra, Premet conjectured that this variety is irreducible for any finite dimensional restricted Lie algebra. In this paper, with the assumption that the ground field is algebraically closed of characteristic p > 3, we confirm this conjecture for the Lie algebras of Cartan type S˜ n and Sn. Moreover, we show that the variety of nilpotent elements in Sn is a complete intersection. Motivated by the proof of the irreducibility, we describe explicitly the ring of invariant polynomial functions on Sn. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
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2. The variety of nilpotent elements and invariant polynomial functions on the special algebra Sn.

Author

Wei, Junyan, Chang, Hao, and Lu, Xin

Subjects
VARIETIES (Universal algebra), NILPOTENT groups, INVARIANTS (Mathematics), POLYNOMIALS, MATHEMATICAL functions, LIE algebras
Abstract

In the study of the variety of nilpotent elements in a Lie algebra, Premet conjectured that this variety is irreducible for any finite dimensional restricted Lie algebra. In this paper, with the assumption that the ground field is algebraically closed of characteristic p > 3, we confirm this conjecture for the Lie algebras of Cartan type S˜ n and Sn. Moreover, we show that the variety of nilpotent elements in Sn is a complete intersection. Motivated by the proof of the irreducibility, we describe explicitly the ring of invariant polynomial functions on Sn. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

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