656 research outputs found
Maximal Subalgebras for Modular Graded Lie Superalgebras of Odd Cartan Type
The purpose of this paper is to determine all maximal graded subalgebras of
the four infinite series of finite-dimensional graded Lie superalgebras of odd
Cartan type over an algebraically closed field of characteristic . All
maximal graded subalgebras consist of three types (\MyRoman{1}), (\MyRoman{2})
and (\MyRoman{3}). Maximal graded subalgebras of type (\MyRoman{3}) fall into
reducible maximal graded subalgebras and irreducible maximal graded
subalgebras. In this paper we classify maximal graded subalgebras of types
(\MyRoman{1}), (\MyRoman{2}) and reducible maximal g raded subalgebras.The
classification of irreducible maximal graded subalgebras is reduced to that of
the irreducible maximal subalgebras of the classical Lie superalgebra
.Comment: For the final version, see Transformation Groups
20(4)(2015)1075--110
Cohomology of Heisenberg Lie Superalgebras
Suppose the ground field to be algebraically closed and of characteristic
different from and . All Heisenberg Lie superalgebras consist of two
super versions of the Heisenberg Lie algebras, and
with a nonnegative integer and a positive integer. The
space of a "classical" Heisenberg Lie superalgebra is the
direct sum of a superspace with a non-degenerate anti-supersymmetric even
bilinear form and a one-dimensional space of values of this form constituting
the even center. The other super analog of the Heisenberg Lie algebra,
, is constructed by means of a non-degenerate anti-supersymmetric
odd bilinear form with values in the one-dimensional odd center. In this paper,
we study the cohomology of and with
coefficients in the trivial module by using the Hochschild-Serre spectral
sequences relative to a suitable ideal. In characteristic zero case, for any
Heisenberg Lie superalgebra, we determine completely the Betti numbers and
associative superalgebra structure for their cohomology. In characteristic
case, we determine the associative superalgebra structures for the
divided power cohomology of and we also make an attempt to
determine the cohomology of by computing it in a
low-dimensional case.Comment: 19 page
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