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Results tagged with ac.commutative-algebra
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user 439
Commutative rings, modules, ideals, homological algebra, computational aspects, invariant theory, connections to algebraic geometry and combinatorics.
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Two-dimensional quotient singularities are rational: why?
Well, Avan's answer covers crepant quotient singularities. There are also non-crepant ones coming finite subgroups in $GL_2$. You can handle those in a similar way. The part of the finite group contai …
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