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For a connected reductive group $G$ and an affine smooth $G$-variety $X$ over the complex numbers, the localization functor takes $\mathfrak{g}$-modules to $D_X$-modules. We extend this construction to an equivariant and derived setting…

Representation Theory · Mathematics 2024-10-18 Wen-Wei Li

Our main theorem provides an $(R,K)$ chain isomorphism: $ T\Delta^*X\cong C(X_K) $. Here $T$ is the Ranicki Duality functor; $\Delta^*X$ is the simplicial cochain complex of the simplicial complex $X$, with control map $\pi:X \to K$ and…

Geometric Topology · Mathematics 2025-04-02 Frank Connolly

We study interactions between the categories of $\D$-modules on smooth and singular varieties. For a large class of singular varieties $Y$, we use an extension of the Grothendieck--Sato formula to show that $\D_Y$-modules are equivalent to…

Algebraic Geometry · Mathematics 2007-05-23 David Ben-Zvi , Thomas Nevins

Among the finitely generated modules over a Noetherian ring R, the semidualizing modules have been singled out due to their particularly nice duality properties. When R is a normal domain, we exhibit a natural inclusion of the set of…

Commutative Algebra · Mathematics 2007-05-23 Sean Sather-Wagstaff

The relative Gromov seminorm is a finer invariant than stable commutator length where a relative homology class is fixed. We show a duality result between bounded cohomology and the relative Gromov seminorm, analogously to Bavard duality…

Geometric Topology · Mathematics 2024-08-16 Alexis Marchand

In this article we extend evaluations of the Kauffman bracket on regular isotopy classes of knots and links to a variety of functors defined on the category of framed tangles. We show that many such functors exist, and that they correspond…

Geometric Topology · Mathematics 2007-05-23 John Armstrong

We extend the comatrix coring to the case of a quasi-finite bicomodule. We also generalize some of its interesting properties. We study equivalences between categories of comodules over rather general corings. We particularize to the case…

Rings and Algebras · Mathematics 2007-05-23 Mohssin Zarouali-Darkaoui

Modular functors are traditionally defined as systems of projective representations of mapping class groups of surfaces that are compatible with gluing. They can formally be described as modular algebras over central extensions of the…

Quantum Algebra · Mathematics 2025-10-27 Adrien Brochier , Lukas Woike

We introduce a method for associating a chain complex to a module over a combinatorial category, such that if the complex is exact then the module has a rational Hilbert series. We prove homology--vanishing theorems for these complexes for…

Representation Theory · Mathematics 2023-02-15 Philip Tosteson

We are concerned with relating derived categories of all modules of two dual Koszul algebras defined by a locally bounded quiver. We first generalize the well known Acyclic Assembly Lemma and formalize an old method of extending a functor…

Representation Theory · Mathematics 2019-08-20 Ales Bouhada , Min Huang , Shiping Liu

We establish several strengthened versions of Lurie's Tannaka duality theorem for certain classes of spectral algebraic stacks. Our most general version of Tannaka duality identifies maps between stacks with exact symmetric monoidal…

Algebraic Geometry · Mathematics 2015-07-08 Bhargav Bhatt , Daniel Halpern-Leistner

We prove a general relative higher index theorem for complete manifolds with positive scalar curvature towards infinity. We apply this theorem to study Riemannian metrics of positive scalar curvature on manifolds. For every two metrics of…

K-Theory and Homology · Mathematics 2012-08-27 Zhizhang Xie , Guoliang Yu

We show various vanishing theorems for the cohomology groups of compact hermitian manifolds for which the Bismut connection has (restricted) holonomy contained in SU(n) and classify all such manifolds of dimension four. In this way we…

Differential Geometry · Mathematics 2009-10-09 S. Ivanov , G. Papadopoulos

We prove some Liouville type results for generalized holomorphic maps in three classes: maps from pseudo-Hermitian manifolds to almost Hermitian manifolds, maps from almost Hermitian manifolds to pseudo-Hermitian manifolds and maps from…

Differential Geometry · Mathematics 2021-10-08 Haojie Chen , Yibin Ren

We give a purely algebraic construction of a cohomological field theory associated with a quasihomogeneous isolated hypersurface singularity W and a subgroup G of the diagonal group of symmetries of W. This theory can be viewed as an…

Algebraic Geometry · Mathematics 2014-04-30 Alexander Polishchuk , Arkady Vaintrob

In the present paper the cyclic homology functor from the category of $A_\infty$-algebras over any commutative unital ring $K$ to the category of graded $K$-modules is constructed. Further, it is showed that this functor sends homotopy…

Algebraic Topology · Mathematics 2019-05-28 S. V. Lapin

We introduce a notion of Nakano and Demailly positivity for singular Hermitian metrics of holomorphic vector bundles. Our definitions support the usual H\"ormander and Nadel type vanishing theorems with estimates, at least on essentially…

Complex Variables · Mathematics 2024-01-01 Dror Varolin

We generalize the higher Riemann-Hilbert correspondence in the presence of scalar curvature for a (possibly non-compact) smooth manifold $M$. We show that the dg-category of curved $\infty$-local systems, the dg-category of graded vector…

Algebraic Topology · Mathematics 2024-12-02 Patrick Antweiler

Connected Shimura varieties are the quotients of hermitian symmetric domains by discrete groups defined by congruence conditions. We examine their relation with moduli varieties. (Handbook of Moduli).

Algebraic Geometry · Mathematics 2021-01-19 J. S. Milne

For X a compact Riemann surface of positive genus, the strange duality conjecture predicts that the space of sections of certain theta bundle on moduli of bundles of rank r and level k is naturally dual to a similar space of sections of…

Algebraic Geometry · Mathematics 2007-05-23 Prakash Belkale