geometry, a Du Val singularity, also called simple surface singularity, Kleinian singularity, or rational double point, is an isolated singularity of a complex...
5 KB (578 words) - 22:33, 20 March 2023
and general relativity. The concept of Du Val singularity of an algebraic surface is named after him. Du Val was born in Cheadle Hulme, Cheshire. He...
6 KB (797 words) - 18:46, 21 March 2023
as du Val singularities, and are analytically isomorphic to quotients of C2 by finite subgroups of SL2(C). Two dimensional log terminal singularities are...
5 KB (649 words) - 15:57, 15 October 2023
rational double points of algebraic surfaces are the Du Val singularities. Elliptic singularity (Kollár & Mori 1998, Theorem 5.22.) (Artin 1966) Artin...
3 KB (387 words) - 17:30, 18 December 2022
projective.) Or one may allow K3 surfaces to have du Val singularities (the canonical singularities of dimension 2), rather than being smooth. The Betti...
34 KB (5,241 words) - 11:22, 18 August 2023
have at most du Val singularities; this has been proved in several cases. Reid, Miles (1987), "Young person's guide to canonical singularities", Algebraic...
2 KB (166 words) - 19:26, 10 December 2023
of the Federal House of Representatives. Patrick du Val, 83, British mathematician (du Val singularity). Ben-Zion, 89, Russian-American painter, sculptor...
43 KB (3,960 words) - 04:29, 3 August 2024
the quotient of C2 by the action of a binary polyhedral group is a Du Val singularity. For point groups that reverse orientation, the situation is more...
60 KB (5,081 words) - 08:25, 12 July 2024
Crepant resolution (category Singularity theory)
dimensions, crepant resolutions of complex Gorenstein quotient singularities (du Val singularities) always exist and are unique, in 3 dimensions they exist...
3 KB (386 words) - 16:20, 14 April 2020
using each discrete subgroup leads to an ADE-type singularity at the origin, termed a du Val singularity. The McKay correspondence can be extended to multiply...
21 KB (2,601 words) - 01:58, 6 June 2024