Results 11 to 20 of about 21,145 (116)
K-classes of matroids and equivariant localization [PDF]
, 2010 To every matroid, we associate a class in the K-theory of the Grassmannian. We study this class using the method of equivariant localization. In particular, we provide a geometric interpretation of the Tutte polynomial.
Fink, Alex, Speyer, David E
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On the cohomology of the Losev-Manin moduli space [PDF]
, 2013 We determine the cohomology of the Losev-Manin moduli space of pointed genus zero curves as a representation of the product of symmetric groups.Comment: 10 pages, no figure.
Bergström, Jonas, Minabe, Satoshi
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Some applications of Rees products of posets to equivariant gamma-positivity [PDF]
, 2019 The Rees product of partially ordered sets was introduced by Bj\"orner and Welker. Using the theory of lexicographic shellability, Linusson, Shareshian and Wachs proved formulas, of significance in the theory of gamma-positivity, for the dimension of the
Athanasiadis, Christos A.
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Differential symmetry breaking operators I : General theory and F-method [PDF]
, 2015 International audienceWe prove a one-to-one correspondence between differential symmetry breaking operators for equivariant vector bundles over two homogeneous spaces and certain homomorphisms for representations of two Lie algebras, in connection with ...
Kobayashi, T., Pevzner, M.
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The Chow ring for the classifying space of $GO(2n)$ [PDF]
, 2014 Let $GO(2n)$ be the general orthogonal group scheme (the group of orthogonal similitudes). In the topological category, Y. Holla and N. Nitsure determined the singular cohomology ring $H^*_{\rm sing}(BGO(2n,\mathbb C),\mathbb F_2)$ of the classifying ...
Bhaumik, Saurav
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Some combinatorial identities related to commuting varieties and Hilbert schemes [PDF]
, 2011 In this article we explore some of the combinatorial consequences of recent results relating the isospectral commuting variety and the Hilbert scheme of points in the ...
A.M. Garsia +15 more
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Projectively and conformally invariant star-products [PDF]
, 2003 We consider the Poisson algebra S(M) of smooth functions on T^*M which are fiberwise polynomial. In the case where M is locally projectively (resp. conformally) flat, we seek the star-products on S(M) which are SL(n+1,R) (resp. SO(p+1,q+1))-invariant. We
Duval, C. +2 more
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Equivariant semidefinite lifts of regular polygons [PDF]
, 2014 Given a polytope P in $\mathbb{R}^n$, we say that P has a positive semidefinite lift (psd lift) of size d if one can express P as the linear projection of an affine slice of the positive semidefinite cone $\mathbf{S}^d_+$.
Fawzi, Hamza +2 more
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Branching laws for Verma modules and applications in parabolic geometry. I [PDF]
, 2015 We initiate a new study of differential operators with symmetries and combine this with the study of branching laws for Verma modules of reductive Lie algebras.
Kobayashi, Toshiyuki +3 more
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On Lagrangian and Hamiltonian systems with homogeneous trajectories [PDF]
, 2010 Motivated by various results on homogeneous geodesics of Riemannian spaces, we study homogeneous trajectories, i.e. trajectories which are orbits of a one-parameter symmetry group, of Lagrangian and Hamiltonian systems. We present criteria under which an
Toth, Gabor Zsolt
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