Results 21 to 30 of about 461,416 (208)
The isomorphism problem for Schubert varieties [PDF]
, 2022 Schubert varieties in the full flag variety of Kac-Moody type are indexed by elements of the corresponding Weyl group. We give a practical criterion for when two such Schubert varieties (from potentially different flag varieties) are isomorphic, in terms
Richmond, Edward, Slofstra, William
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Grothendieck lines in 3d N $$ \mathcal{N} $$ = 2 SQCD and the quantum K-theory of the Grassmannian
Journal of High Energy Physics, 2023 We revisit the 3d GLSM computation of the equivariant quantum K-theory ring of the complex Grassmannian from the perspective of line defects.
Cyril Closset, Osama Khlaif
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Angewandte Chemie, EarlyView.One catalyst for two products: CO acts as a molecular trigger for adaptive alkyne hydrogenation using supported Pd nanoparticles. The catalyst reversibly switches between the formation of alkanes under H2 and Z‐alkenes under H2/CO for 37 structurally diverse alkynes.
Manisha Durai +7 more
wiley +2 more sources
NILPOTENT VARIETIES IN SYMMETRIC SPACES AND TWISTED AFFINE SCHUBERT VARIETIES [PDF]
, 2021 Let $G$ be a simply-connected simple algebraic group, $\mathfrak{g}$ its Lie algebra. Let $\mathrm{Gr}_G$ be the affine Grassmannian of $G$, and $\mathrm{Gr}_0^-$ the opposite open Schubert cell in $\mathrm{Gr}_G$. Achar and Henderson defined a map $\pi:\
Korkeathikhun, Korkeat
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An inequality of Kostka numbers and Galois groups of Schubert problems [PDF]
Discrete Mathematics & Theoretical Computer Science, 2012 We show that the Galois group of any Schubert problem involving lines in projective space contains the alternating group. Using a criterion of Vakil and a special position argument due to Schubert, this follows from a particular inequality among Kostka ...
Christopher J. Brooks +2 more
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Spectrum of equivariant cohomology as a fixed point scheme [PDF]
Épijournal de Géométrie AlgébriqueAn action of a complex reductive group $\mathrm G$ on a smooth projective variety $X$ is regular when all regular unipotent elements in $\mathrm G$ act with finitely many fixed points.
Tamás Hausel, Kamil Rychlewicz
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Grassmanniennes affines tordues sur les entiers
Forum of Mathematics, Sigma, 2023 We generalize the works of Pappas–Rapoport–Zhu on twisted affine Grassmannians to the wildly ramified case under mild assumptions. This rests on a construction of certain smooth affine $\mathbb {Z}[t]$ -groups with connected fibers of parahoric ...
João Lourenço
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Flag Gromov-Witten invariants via crystals [PDF]
Discrete Mathematics & Theoretical Computer Science, 2014 We apply ideas from crystal theory to affine Schubert calculus and flag Gromov-Witten invariants. By defining operators on certain decompositions of elements in the type-$A$ affine Weyl group, we produce a crystal reflecting the internal structure of ...
Jennifer Morse, Anne Schilling
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LS Algebras, Valuations and Schubert Varieties
, 2022 In this paper, we propose an algebraic approach via Lakshmibai-Seshadri (LS) algebras to establish a link between standard monomial theories, Newton-Okounkov bodies and valuations.
Fang, Xin +2 more
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Cohomology classes of rank varieties and a counterexample to a conjecture of Liu [PDF]
Discrete Mathematics & Theoretical Computer Science, 2015 To each finite subset of a discrete grid $\mathbb{N}×\mathbb{N}$ (a diagram), one can associate a subvariety of a complex Grassmannian (a diagram variety), and a representation of a symmetric group (a Specht module).
Brendan Pawlowski
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