Subregular subalgebras and invariant generalized complex structures on Lie groups

preprint2017arXivOpen access

Abstract

We introduce the notion of a subregular subalgebra, which we believe is useful for classification of subalgebras of Lie algebras. We use it to construct a non-regular invariant generalized complex structure on a Lie group. As an illustration of the study of invariant generalized complex structures, we compute them all for the real forms of G2.

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