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- W2950129308 abstract "In this paper, a new construction of vertex algebras from more general vertex operators is given and a notion of quasi module for vertex algebras is introduced and studied. More specifically, a notion of quasi local subset(space) of $Hom (W,W((x)))$ for any vector space $W$ is introduced and studied, generalizing the notion of usual locality in the most possible way, and it is proved that on any maximal quasi local subspace there exists a natural vertex algebra structure and that any quasi local subset of $Hom (W,W((x)))$ generates a vertex algebra. Furthermore, a notion of quasi module for a vertex algebra is introduced and it is proved that $W$ is a quasi module for each of the vertex algebras generated by quasi local subsets of $Hom (W,W((x)))$. A notion of $Gamma$-vertex algebra is also introduced and studied, where $Gamma$ is a subgroup of the multiplicative group $C^{times}$ of nonzero complex numbers. It is proved that any maximal quasi local subspace of $Hom (W,W((x)))$ is naturally a $Gamma$-vertex algebra and that any quasi local subset of $Hom (W,W((x)))$ generates a $Gamma$-vertex algebra. It is also proved that a $Gamma$-vertex algebra exactly amounts to a vertex algebra equipped with a $Gamma$-module structure which satisfies a certain compatibility condition. Finally, three families of examples are given, involving twisted affine Lie algebras, certain quantum Heisenberg algebras and certain quantum torus Lie algebras." @default.
- W2950129308 created "2019-06-27" @default.
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- W2950129308 date "2004-04-05" @default.
- W2950129308 modified "2023-09-27" @default.
- W2950129308 title "A new construction of vertex algebras and quasi modules for vertex algebras" @default.
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