Results 41 to 50 of about 149 (98)
Poset polytopes and pipe dreams: types C and B
The first part of this paper concerns type C. We present new explicitly defined families of algebro-combinatorial structures of three kinds: combinatorial bases in representations, Newton-Okounkov bodies of flag varieties and toric degenerations of flag ...
Makhlin, Igor, Makedonskyi, Ievgen
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, 2004 unavailable at this time... Mathematics Subject Classification (2000): 03E72, 52A01, 54E35, 53C70, 14M15 Quaestiones Mathematicae 25 (2002), 147 ...
Lubczonok, G, Remsing, C.C
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A categorical action of the shifted $0$ -affine algebra
Forum of Mathematics, SigmaWe introduce a new algebra $\mathcal {U}=\dot {\mathrm {\mathbf{U}}}_{0,N}(L\mathfrak {sl}_n)$ called the shifted $0$ -affine algebra, which emerges naturally from studying coherent sheaves on n-step partial flag varieties through natural ...
You-Hung Hsu
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Forum of Mathematics, SigmaIn our previous paper, we gave a presentation of the torus-equivariant quantum K-theory ring $QK_{H}(Fl_{n+1})$ of the (full) flag manifold $Fl_{n+1}$ of type $A_{n}$ as a quotient of a polynomial ring by an explicit ideal.
Toshiaki Maeno +2 more
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Algebraic hyperbolicity of very general hypersurfaces in homogeneous varieties [PDF]
Épijournal de Géométrie AlgébriqueWe generalize techniques by Coskun, Riedl, and Yeong, and obtain an almost optimal bound on the degree for the algebraic hyperbolicity of very general hypersurfaces in rational homogeneous varieties.
Lucas Mioranci
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Quantum K theory of Grassmannians, Wilson line operators and Schur bundles
Forum of Mathematics, SigmaWe prove a ‘Whitney’ presentation, and a ‘Coulomb branch’ presentation, for the torus equivariant quantum K theory of the Grassmann manifold $\mathrm {Gr}(k;n)$ , inspired from physics, and stated in an earlier paper.
Wei Gu +3 more
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Smooth locus of twisted affine Schubert varieties and twisted affine Demazure modules
Forum of Mathematics, SigmaLet ${\mathscr {G}} $ be a special parahoric group scheme of twisted type over the ring of formal power series over $\mathbb {C}$ , excluding the absolutely special case of $A^{(2)}_{2\ell }$ .
Marc Besson, Jiuzu Hong
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Singularities of Steinberg deformation rings
Forum of Mathematics, SigmaLet l and p be distinct primes, let F be a local field with residue field of characteristic p, and let X $\mathfrak {X}$ German upper X be the irreducible component of the moduli space of Langlands parameters for GL3 $GL_3$ upper G upper L 3 ...
Daniel Funck, Jack Shotton
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On some invariants of cubic fourfolds. [PDF]
Eur J Math, 2023 Gounelas F, Kouvidakis A.
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The Riccati Flow and Singularities of Schubert Varieties
, 1993 : Let Gr(m; n) be the Grassmannian of m\Gammadimensional subspaces of an n\Gammadim- ensional k\Gammavector space, with k = R or C. Fix an n \Theta n matrix R with coefficients in k: The Riccati Flow \Phi on Gr(m; n) is the action of a one-parameter ...
James S. Wolper
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