Central extensions of matrix Lie superalgebras over Z/2Z-graded algebras
نویسندگان
چکیده
We study central extensions of the Lie superalgebra sln(A) when A is a Z/2Z-graded superalgebra over a commutative ring K. Steinberg Lie superalgebras and their central extensions play an essential role. We use a Z/2Z-graded version of cyclic homology to study the center of the extensions in question.
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