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This paper gives an example of special Lagrangian manifold obtained from a hypersurface of a complex Grassmannian with vanishing first Chern class. The obtained manifold is a 1-torus bundle over the two dimensional real projective space.…

Differential Geometry · Mathematics 2007-05-23 A. Ben Abdesselem , P. Cabau

We define and investigate a class of Koszul quasi-hereditary algebras for which there is a natural equivalence between the bounded derived category of graded modules and the bounded derived category of graded modules over (a proper version…

Representation Theory · Mathematics 2010-04-02 Yuriy Drozd , Volodymyr Mazorchuk

We construct an $S_2\times S_n$ invariant full exceptional collection on Hassett spaces of weighted stable rational curves with $n+2$ markings and weights $(\frac{1}{2}+\eta, \frac{1}{2}+\eta,\epsilon,\ldots,\epsilon)$, for $0<\epsilon,…

Algebraic Geometry · Mathematics 2024-04-17 Ana-Maria Castravet , Jenia Tevelev

In this paper we develop a geometric approach to higher order mechanics on graded bundles in both, the Lagrangian and Hamiltonian formalism, via the recently discovered weighted algebroids. We present the corresponding Tulczyjew triple for…

Mathematical Physics · Physics 2015-12-18 Andrew James Bruce , Katarzyna Grabowska , Janusz Grabowski

Let X be Drinfeld's upper half space of dimension d over a finite extension K of Q_p. We construct for every homogeneous vector bundle F on the projective space P^d a GL_{d+1}(K)-equivariant filtration by closed K-Frechet spaces on F(X).…

Number Theory · Mathematics 2007-06-24 Sascha Orlik

We explicitly determine the group of isomorphism classes of equivariant line bundles on the non-archimedean Drinfeld upper half plane for $\mathrm{GL}_2(F)$, for its subgroups of matrices whose determinant has even (respectively trivial)…

Algebraic Geometry · Mathematics 2026-04-01 Georg Linden

A reductive structure is associated here with Lagrangian canonically defined conserved quantities on gauge-natural bundles. Parametrized transformations defined by the gauge-natural lift of infinitesimal principal automorphisms induce a…

Mathematical Physics · Physics 2009-11-13 M. Palese , E. Winterroth

We construct an equivalence of categories from a strong categorical sl(2) action, following the work of Chuang-Rouquier. As an application, we give an explicit, natural equivalence between the derived categories of coherent sheaves on…

Algebraic Geometry · Mathematics 2011-07-01 Sabin Cautis , Joel Kamnitzer , Anthony Licata

We study the null fiber of a moment map related to dual pairs. We construct an equivariant resolution of singularities of the null fiber, and get conormal bundles of closed $ K_C $-orbits in the Lagrangian Grassmannian as the categorical…

Representation Theory · Mathematics 2010-12-16 Kyo Nishiyama

We use constructions of surfaces as abelian covers to write down exceptional collections of line bundles of maximal length for every surface $X$ in certain families of surfaces of general type with $p_g=0$ and $K_X^2=3,4,5,6,8$. We also…

Algebraic Geometry · Mathematics 2015-11-04 Stephen Coughlan

Buch and Rim\'{a}nyi proved a formula for specializations of double Grothendieck polynomials based on the Yang-Baxter equation related to the degenerate Hecke algebra. A geometric proof was found by Yong and Woo by constructing a…

Combinatorics · Mathematics 2020-02-13 Neil J. Y. Fan , Peter L. Guo

We study second-order modular differential equations whose solutions transform equivariantly under the modular group. In the reducible case, we construct all such solutions using an explicit ansatz involving Eisenstein series and the…

Number Theory · Mathematics 2025-08-15 Khalil Besrour , Hicham Saber , Abdellah Sebbar

We introduce a Grassmannian structure for a class of quotient Hilbert modules and attack the polydisc version of Arveson-Douglas conjecture associated to distinguished varieties. More interestingly, we obtain an operator-theoretic…

Operator Algebras · Mathematics 2023-04-27 Kunyu Guo , Penghui Wang , Chong Zhao

We show that in a smooth family of complete varieties, the existence of full exceptional collection on a fiber preserves for the fibers in a neighborhood. Then we show that the noncommutative deformations of a strong exceptional collection…

Algebraic Geometry · Mathematics 2019-03-08 Xiaowen Hu

We introduce the concepts of an amazing hypercube decomposition and a double shortcut for it, and use these new ideas to formulate a conjecture implying the Combinatorial Invariance Conjecture of the Kazhdan--Lusztig polynomials for the…

Combinatorics · Mathematics 2024-11-27 Francesco Esposito , Mario Marietti , Grant T. Barkley , Christian Gaetz

We study the double Grothendieck polynomials of Kirillov--Naruse for the symplectic and odd orthogonal Grassmannians. These functions are explicitly written as sums of Pfaffian and are identified with the stable limits of the fundamental…

Combinatorics · Mathematics 2022-04-05 Thomas Hudson , Takeshi Ikeda , Tomoo Matsumura , Hiroshi Naruse

We provide a geometric approach to constructing Lefschetz collections and Landau-Ginzburg Homological Projective Duals from a variation of Geometric Invariant Theory quotients. This approach yields homological projective duals for Veronese…

Algebraic Geometry · Mathematics 2014-09-22 Matthew Ballard , Dragos Deliu , David Favero , M. Umut Isik , Ludmil Katzarkov

Covariant first order differential calculus over quantum complex Grassmann manifolds is considered. It is shown by a Pusz-Woronowicz type argument that under restriction to calculi close to classical Kaehler differentials there exist…

Quantum Algebra · Mathematics 2016-09-07 Stefan Kolb

In this paper we construct indecomposable vector bundles associated to monads on Cartesian products of odd dimension projective spaces. Specifically we establish the existence of monads on…

Algebraic Geometry · Mathematics 2025-04-15 Damian Maingi

We propose a theory of double Schubert polynomials P_w(X,Y) for the Lie types B, C, D which naturally extends the family of Lascoux of Schutzenberger in type A. These polynomials satisfy positivity, orthogonality, and stability properties,…

Algebraic Geometry · Mathematics 2007-05-23 Andrew Kresch , Harry Tamvakis