Results 71 to 80 of about 461,416 (208)
Singularities of Schubert varieties
, 2000 Let G be a semi-simple linear algebraic group defined over an algebraically closed field and B a Borel subgroup. A Schubert variety is the closure of an orbit of the group B in the flag variety G/B.
Mizerski, Maciej.
core
Following Schubert varieties under Feigin’s degeneration of the flag variety [PDF]
We study the effect of Feigin's flat degeneration of the type A flag variety on the defining ideals of its Schubert varieties. In particular, we describe two classes of Schubert varieties which stay irreducible under the degenerations and in several ...
Bossinger L., Lanini M.
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ON SCHUBERT VARIETIES OF COMPLEXITY ONE
, 2021 © 2021. All Rights Reserved.Let B be a Borel subgroup of GLn ((Formula presented)) and (Formula presented) a maximal torus contained in B. Then (Formula presented) acts on GLn((Formula presented))/B and every Schubert variety is T-invariant.
EUNJEONG LEE +2 more
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Schubert varieties, linear codes and enumerative combinatorics [PDF]
, 2005 We consider linear error correcting codes associated to higher-dimensional projective varieties defined over a finite field. The problem of determining the basic parameters of such codes often leads to some interesting and difficult questions in ...
GHORPADE, SR +5 more
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Residual Intersections and Schubert Varieties [PDF]
Inspired by the work of Ulrich and Huneke-Ulrich, we describe a pattern to show that the ideals of certain opposite embedded Schubert varieties defined by this pattern arise by taking residual intersections of two geometrically linked opposite Schubert ...
Ni, Xianglong +3 more
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Count Nouns - Mass Nouns, Neat Nouns - Mess Nouns
The Baltic International Yearbook of Cognition, Logic and Communication, 2010 In this paper I propose and formalize a theory of the mass-count distinction in which the denotations of count nouns are built from non-overlapping generators, while the denotations of mass nouns are built from overlapping generators.
Fred Landman
doaj +1 more source
Normality of Schubert varieties in affine Grassmannians
, 2023 We classify all normal Schubert varieties in the affine Grassmannian of a semisimple group over an arbitrary field with special attention to small positive characteristic.
Richarz, Timo, Bieker, Patrick
core
PLANTS, PEOPLE, PLANET, EarlyView.Avocados are a multibillion‐dollar global commodity, but their growing export market pressures local farmers to abandon local fruit tree diversity in favor of commercial cultivar production. Interviews with rural avocado farmers and households from the Southern Mexican Highlands, Pacific Coastal Honduras, and Western Nicaragua, as well as the genetic ...
Kevin Wann +4 more
wiley +1 more source
Coordinate rings of regular nilpotent Hessenberg varieties in the open opposite schubert cell
Forum of Mathematics, SigmaDale Peterson has discovered a surprising result that the quantum cohomology ring of the flag variety $\operatorname {\mathrm {GL}}_n({\mathbb {C}})/B$ is isomorphic to the coordinate ring of the intersection of the Peterson variety ...
Tatsuya Horiguchi, Tomoaki Shirato
doaj +1 more source
Coupled diabatic and frictional forcing of single‐layer vortical flow
Quarterly Journal of the Royal Meteorological Society, EarlyView.A single‐layer balanced model is used to illustrate how diabatic and frictional forcing of a primary balanced vortical flow can be coupled self‐consistently, including the advection of potential vorticity by the induced transverse circulation. The coupling is illustrated in the context of a developing tropical cyclone, in which boundary‐layer dynamics ...
R. K. Scott
wiley +1 more source