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WILD QUOTIENT SURFACE SINGULARITIES WHOSE DUAL GRAPHS ARE NOT STAR-SHAPED
We obtain some results that answer certain questions of Lorenzini on wild quotient singularities in dimension two. Using Kato’s theory of log structures and log regularity, we prove that the dual graph of exceptional curves on the resolution of singularities contains at least one node. Furthermore, we show that diagonal quotients for Hermitian curves by analogues of Heisenberg groups lead to examples of wild quotient singularities where the...
35 p pdu 25/09/2012 120 1
Từ khóa: Algebraic geometry, mathematics, geometry, hình học đại số, toán học, algebraic number theory, real algebraic geometry.
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