Results 61 to 70 of about 318 (158)
Extension Problem for Flexible Varieties
, 2019 We consider n - dimensional, with n greater or equal to 4, flexible quasi-affine varieties X, that are varieties on which the group generated by all one-parameter unipotent subgroups of Aut(X) acts transitively.
Udumyan, David
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Ribbon Tableaux, Hall-Littlewood Functions And Unipotent Varieties
, 1997 We introduce a new family of symmetric functions, which are defined in terms of ribbon tableaux and generalize Hall-Littlewood functions. We present a series of conjectures, and prove them in two special cases.
Jean-yves Thibon +2 more
core
Equivariant-constructible Koszul duality for dual toric varieties
, 2006 For affine toric varieties X and Xˇ defined by dual cones, we define an equivalence of categories between mixed versions of the equivariant derived category DTb(X) and the derived category of sheaves on Xˇ which are locally constant with unipotent ...
Braden, Tom, Lunts, Valery A.
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Selmer varieties for curves with CM Jacobians
, 2008 We study the Selmer variety associated to a canonical quotient of the $\Q_p$-pro-unipotent fundamental group of a smooth projective curve of genus at least two defined over $\Q$ whose Jacobian decomposes into a product of abelian varieties with complex ...
Coates, John +5 more
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, 2005 In commutative algebra, a Weitzenböck derivation is a nonzero triangular linear derivation of the polynomial algebra K[x1,…,xm] in several variables over a field K of characteristic 0.
Drensky, Vesselin, Gupta, C.K.
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, 2004 In this paper, we study the commuting variety of symmetric pairs associated to parabolic subalgebras with abelian unipotent radical in a simple complex Lie algebra. By using the ``cascade'' construction of Kostant, we construct a Cartan subspace which in turn provides, in certain cases, useful information on the centralizers of non $\mathfrak{p ...
Sabourin, Herve, Yu, Rupert W. T.
openaire +2 more sources
, 2005 Let $S$ be a Riemann surface obtained by deleting a finite number of points, called cusps, from a compact Riemann surface. Let $ρ: π_1(S)\to Sl(n, \mathbb{C})$ be a semisimple linear representation of $π_1(S)$ which is unipotent near the cusps. We investigate various cohomologies associated to $ρ$ of $\bar S$ with degenerating coefficients $L_ρ ...
Jost, Juergen, Yang, Yi-Hu, Zuo, Kang
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Arithmetic geometry of character varieties with regular monodromy, I
, 2023 We study character varieties arising as moduli of representations of an orientable surface group into a reductive group $G$. We first show that if $G/Z$ acts freely on the representation variety, then both the representation variety and the character ...
Nam, GyeongHyeon +2 more
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Free Field Realisation of the Chiral Universal Centraliser. [PDF]
Ann Henri Poincare, 2023 Beem C, Nair S.
europepmc +1 more source