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Automorphism groups of cyclic orbifold vertex operator algebras associated with the Leech lattice and some non-prime isometries

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Abstract

We determine the automorphism groups of the cyclic orbifold vertex operator algebras associated with coinvariant lattices for isometries of the Leech lattice in the conjugacy classes 4C, 6E, 6G, 8E and 10F. As a consequence, we have determined the automorphism groups of all the 10 vertex operator algebras in [Hö], which are useful to analyze holomorphic vertex operator algebras of central charge 24.

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Correspondence to Ching Hung Lam.

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C. H. Lam was partially supported by a research grant AS-IA-107-M02 of Academia Sinica and MOST grant 107-2115-M-001-003-MY3 of Taiwan.

H. Shimakura was partially supported by JSPS KAKENHI Grant Numbers JP19KK0065 and JP20K03505.

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Betsumiya, K., Lam, C.H. & Shimakura, H. Automorphism groups of cyclic orbifold vertex operator algebras associated with the Leech lattice and some non-prime isometries. Isr. J. Math. 259, 621–650 (2024). https://doi.org/10.1007/s11856-023-2552-2

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  • DOI: https://doi.org/10.1007/s11856-023-2552-2

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