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arxiv: 1001.3863 · v4 · pith:J4G324WSnew · submitted 2010-01-21 · 🧮 math.AG

Six-dimensional exceptional quotient singularities

classification 🧮 math.AG
keywords exceptionalquotientsingularitiessix-dimensionalaliaclassifyexistgives
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We classify six-dimensional exceptional quotient singularities and show that seven-dimensional exceptional quotient singularities do not exist. Inter alia we prove that the irreducible six-dimensional projective representation of the sporadic simple Hall--Janko group gives rise to an exceptional quotient singularity.

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