Normality of orbit closure
Web1 de abr. de 2006 · Normality of orbit closures for Dynkin quivers of type A n. Manuscripta Math., 105 (2001), pp. 103-109. View Record in Scopus Google Scholar. ... An orbit closure for a representation of the Kronecker quiver with bad singularities. Colloq. Math., 97 (2003), pp. 81-86. CrossRef View Record in Scopus Google Scholar WebCanad. J. Math. Vol. 64 (6), 2012 pp. 1222–1247 http://dx.doi.org/10.4153/CJM-2012-012-7 Canadian Mathematical Society 2012c Normality of Maximal Orbit Closures for ...
Normality of orbit closure
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Web12 de set. de 2011 · Abstract Let $\\Delta $ be a Euclidean quiver. We prove that the closures of the maximal orbits in the varieties of representations of $\\Delta $ are … WebThe normality of closures of nilpotent orbit of classical group have been studied by several authors. However, there is still an open question to decide the normality of the closures …
WebIt is known that the orbit closures for the representations of the equioriented Dynkin quivers ? n are normal and Cohen–Macaulay varieties with rational singularities. In the paper we prove the same for the Dynkin quivers ? n with arbitrary orientation. Web3 de fev. de 2016 · In this paper, we prove the normality of the orbit closure \(\bar {\mathcal {O}}_{N}\) when it is a hypersurface. The result thus gives new examples of …
WebThe normality of the orbit closure ON in the case (C) of Theorem 1.2 is an open question in general, and we shall handle it in a separated paper. Since ON is an irreducible affine hypersurface, then, by a well-known criterion of Serre (see, for example, [7, III.8]), its normality is equivalent to Web1 de dez. de 1979 · Abstract. Let X be the closure of a G-orbit in the Lie algebra of a connected reductive group G. It seems that the variety X is always normal. After a reduction to nilpotent orbits, this is proved ...
WebIt is known that the orbit closures for the representations of the equioriented Dynkin quivers ? n are normal and Cohen–Macaulay varieties with rational singularities. In the paper we …
Web1 de nov. de 2000 · Abstract The purpose of this note is to classify the torus orbit closures in an arbitrary algebraic homogeneous space G / P that are ... {Normality of Torus Orbit … grameenphone postpaid bill downloadWebLet N be a quiver representation with non-zero admissible annihilator. In this paper, we prove the normality of the orbit closure ŌN$\\bar {\\mathcal {O}}_{N}$ when it is a hypersurface. The result thus gives new examples of normal orbit closures of quiver representations. grameenphone postpaid bill checkWebNormality and Non Normality Of Certain Semigroups and Orbit Closures 19 A := ⊕ nH0(X,L nλ), L µ being the line bundle onX corresponding to µ. Let us take now for each … china plan for peaceWebOrbit closuresGeometric techniqueCalculationsResults Example V x V(a) dimV x = d Rep(Q;d) = M d d(k) Group action: conjugation Orbits: conjugacy classes of matrices in M(d;k) Geometry: normal, Cohen-Macaulay varieties with rational singularities. For nilpotent V(a), if char k >0 then O V(a) is a Frobenius split variety. if char k = 0 then O V(a ... grameenphone offer checkWebNormality of orbit closures in the enhanced nilpotent cone - Volume 203. Skip to main content Accessibility help ... We prove that each closure is an invariant-theoretic … china planning attack on usWebAs a consequence, we obtain the normality of certain orbit closures of type E. 1 Introduction. Let K be a field of characteristic zero. A quiver is a pair Q=(Q 0,Q 1) where Q 0 is a set of vertices and Q 1 is a set of arrows. ... In the case of Dynkin quivers, the variety Y =q(Z(Q,β⊂β+γ)) is an orbit closure: Z(Q, ... grameenphone offer mbWeb29 de out. de 2003 · For a non-generic torus orbit closure Y of G/B, one can find the corresponding fan using the Orbit-Cone correspondence. It should be noted that Y is not … china plans property rescue