Spherical varieties
WebAccording to a talk by Domingo Luna around 1985, the term spherical variety is not derived from spheres, at least not directly. Firstly, spheres are way too atypical, e.g., their … Webclassification of minimal rank spherical varieties. This means, in particular, that the homogeneous variety G∧ X /ϕ(G∨ X) is of an extremely special type, namely it is affine, spherical,andofminimalrank(Corollary4.7). Nextwe give,inthespirit oftheLanglandsphilosophy, areformulationofthemain
Spherical varieties
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WebThe second part is devoted to spherical varieties, and follows the same pattern as the rst part: after some background material on representation theory of connected reductive groups (highest weights) and its geometric counterpart (U-invariants), we obtain fundamental characterizations and niteness properties of a ne spherical varieties. WebDescription Let G be a connected reductive algebraic group, spherical G-varieties are generalizations of symmetric G-spaces bearing nice properties on their compactifications. Over an algebraically closed field of characteristic 0, spherical varieties are classified by the Luna-Vust theory (spherical embeddings) together with combinatorial objects called the …
http://www-personal.umich.edu/~charchan/seminar/ Webrice tungro spherical virus, mutagenesis. Summary Rice tungro disease (RTD) is a serious constraint in rice production across tropical Asia. RTD is caused by the interaction between Rice tungro spherical virus (RTSV) and Rice tungro bacilliform virus. RTSV resistance found in traditional cultivars has contributed to a reduction in the
WebAgave stricta is a small species, forming large balls of skewer-like leaves and looking like a very nasty porcupine. This species has the tightest spherical shape of any agave and will form offshoots to create a colony of rosettes. Each rosette grows in a slightly different direction. Varieties of Agave stricta: Agave stricta Nana WebSetting: Spherical varieties Spherical variety: nonabelian version of toric variety G reductive, split/k. G X (normal, a ne) is aspherical varietyif Borel B ˆG has an open orbit Tate: Toric …
WebMar 18, 2024 · Abstract. Braverman and Kazhdan proposed a conjecture, later refined by Ng\^o and partially set in the framework of spherical varieties by Sakellaridis, that asserts that affine spherical ...
WebPart 2: spherical varieties Zhiyu Zhang (MIT) April 5th, 202416/40. Sphericalvarieties Now G isareductivegroupwithaBorel B overafield k 0, X isa normal G-varietyover k 0. Inpractice, F isalocalfieldwithresidue field k 0 = F q. Forsimplicity,now k 0 = C, F = k 0((t)). punisher theme musicWebMotivated by this, we develop, under some assumptions on the spherical variety, a Plancherel formula for L 2 (X) up to discrete (modulo center) spectra of its "boundary degenerations", certain G-varieties with more symmetries which model X at infinity. Along the way, we discuss the asymptotic theory of subrepresentations of C∞ (X) and ... punisher themes for windows 10WebThe theory of wonderful varieties is developed in §30. Applications include computation of the canonical divisor of a spherical variety and Luna’s conceptual approach to the … punisher themeWebStable spherical varieties and their moduli,math.AG/0505673. Article. Jul 2005; Valery Alexeev; Michel Brion; Cite. Request full-text. Vanishing of Top Equivariant Chern Classes of Regular Embeddings. punisher theme songWebJan 1, 2006 · We introduce a notion of stable spherical variety which includes the spherical varieties under a reductive group G and their flat equivariant degenerations. Given any … second hand mobile olxWebNov 4, 2024 · Spherical varieties, functoriality, and quantization Yiannis Sakellaridis We discuss generalizations of the Langlands program, from reductive groups to the local and … second hand mobile phone near meWebSpherical varieties are algebraic varieties equipped with an action of a certain type of algebraic group G subject to a finiteness condition. The type of G will be called … punisher the slavers