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- W4313305345 abstract "Hom-Lie algebras having non-invertible and equivariant twist maps are studied. Central extensions of Hom-Lie algebras having these properties are obtained and shown how the same properties are preserved. Conditions are given so that the produced central extension has an invariant metric with respect to its Hom-Lie product making its twist map self-adjoint when the original Hom-Lie algebra has such a metric. This work is focused on algebras with these properties and we call them quadratic Hom-Lie algebras. It is shown how a quadratic Hom-Lie algebra gives rise to a quadratic Lie algebra and that the Lie algebra associated to the given Hom-Lie central extension is a Lie algebra central extension of it. It is also shown that if the 2-cocycle associated to the central extension is not a coboundary, there exists a non-abelian and non-associative algebra, the commutator of whose product is precisely the Hom-Lie product of the Hom-Lie central extension. Moreover, the algebra whose commutator realizes this Hom-Lie product is shown to be simple if the associated Lie algebra is nilpotent. Non-trivial examples are provided." @default.
- W4313305345 created "2023-01-06" @default.
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- W4313305345 date "2022-12-27" @default.
- W4313305345 modified "2023-09-23" @default.
- W4313305345 title "On quadratic Hom-Lie algebras with equivariant twist maps and their relationship with quadratic Lie algebras" @default.
- W4313305345 doi "https://doi.org/10.48550/arxiv.2212.13584" @default.
- W4313305345 hasPublicationYear "2022" @default.
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