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Derivations of direct limits of Lie superalgebras. (English) Zbl 1380.17019

Summary: We describe the derivations of a direct limit of Lie superalgebras \(\mathfrak L^i\) \((i \in I)\) in an \(\mathfrak L\)-module \(\mathfrak u\) as the inverse limit of the derivations of \(\mathfrak L^i\)’s in \(\mathfrak u\). Using this, in case the first cohomology group of each \(\mathfrak L^i\) with coefficients in \(\mathfrak u\) is zero, we describe the derivations of \(\mathfrak L\) in \(\mathfrak u\) as the inverse limit of \(\mathfrak u/\mathfrak u^{\mathfrak L^i}\) \((i\in I)\). This then allows us to compute the derivations of direct limits of finite-dimensional basic classical simple Lie superalgebras.

MSC:

17B65 Infinite-dimensional Lie (super)algebras
17B40 Automorphisms, derivations, other operators for Lie algebras and super algebras
Full Text: DOI

References:

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