Results 11 to 20 of about 152 (152)
Symplectic Resolutions for Conical Symplectic Varieties [PDF]
International Mathematics Research Notices, 2014 We introduce the notion of a conical symplectic variety, and show that any symplectic resolution of such a variety is isomorphic to the Springer resolution of a nilpotent orbit in a semisimple Lie algebra, composed with a linear projection.
Brion, Michel, Fu, Baohua
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Symplectic Groupoids of Log Symplectic Manifolds [PDF]
International Mathematics Research Notices, 2013 A log symplectic manifold is a Poisson manifold which is generically nondegenerate. We develop two methods for constructing the symplectic groupoids of log symplectic manifolds. The first is a blow-up construction, corresponding to the notion of an elementary modification of a Lie algebroid along a subalgebroid.
Gualtieri, Marco, Li, Songhao
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International Journal of Geometric Methods in Modern Physics, 2006 This article is an overview of the results obtained in recent years on symplectic connections. We present what is known about preferred connections (critical points of a variational principle). The class of Ricci-type connections (for which the curvature is entirely determined by the Ricci tensor) is described in detail, as well as its far-reaching ...
Bieliavsky, Pierre +4 more
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SYMPLECTIC SURFACES IN SYMPLECTIC 4-MANIFOLDS
Taiwanese Journal of Mathematics, 2003 Let \(X\) be a closed, minimal, symplectic 4-manifold with symplectic form \(\omega,\) and \(F\) a symplectic surface in \(X\) satisfying \(c_1(TX)[F] > 0.\) D. McDuff asked whether it follows that \(X\) must be rational or ruled. Partial results have been obtained by \textit{D. McDuff} in [J. Am. Math. Soc. 3, 679-712 (1990; Zbl 0723.53019); J.
Cho, Mi Sung, Cho, Yong Seung
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Axioms, 2018 The class of A-stable symmetric one-step Hermite–Obreshkov (HO) methods introduced by F. Loscalzo in 1968 for dealing with initial value problems is analyzed.
Francesca Mazzia, Alessandra Sestini
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On symplectic and non-symplectic automorphisms of K3 surfaces
Revista Matemática Iberoamericana, 2013 In this paper we investigate when the generic member of a family of complex K3 surfaces admitting a non-symplectic automorphism of finite order admits also a symplectic automorphism of the same order. We give a complete answer to this question if the order of the automorphism is a prime number and we provide several examples and ...
A. Garbagnati, A. Sarti
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Journal of Algebraic Combinatorics, 1998 A Coxeter matroid, also called WP-matroid, is a subset \(M\) of the set of cosets \(W/P\) of a Coxeter group \(W\) modulo a parabolic subgroup \(P\) such that \(M\) satisfies a certain maximality condition. More precisely, for each \(w\in W\) there is an element \(x\in M\) such that for all \(y\in M\) the element \(w^{-1}y\) precedes or equals \(w^{-1 ...
Borovik, Alexandre V. +2 more
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Aperture referral in dioptric systems with stigmatic elements
African Vision and Eye Health, 2012 A previous paper develops the general theory of aperture referral in linear optics and shows how several ostensibly distinct concepts, including the blur patch on the retina, the effective corneal patch, the projective field and the field of view, are ...
W. F. Harris
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Symplectic quotients have symplectic singularities [PDF]
Compositio Mathematica, 2020 Let $K$ be a compact Lie group with complexification $G$
Herbig, Hans-Christian +2 more
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Symplectic subspaces of symplectic Grassmannians
European Journal of Combinatorics, 2007 AbstractLet V be a non-degenerate symplectic space of dimension 2n over the field F and for a natural number ...
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