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In this article I describe my recent geometric localization argument dealing with actions of NONcompact groups which provides a geometric bridge between two entirely different character formulas for reductive Lie groups and answers the…

Representation Theory · Mathematics 2007-05-23 Matvei Libine

The purpose of this paper is to prove the localization theorem for torus actions in equivariant intersection theory. Using the theorem we give another proof of the Bott residue formula for Chern numbers of bundles on smooth complete…

alg-geom · Mathematics 2008-02-03 Dan Edidin , William Graham

Quillen's localization theorem is well known as a fundamental theorem in the study of algebraic K-theory. In this paper, we present its arithmetic analogue for the equivariant K-theory of arithmetic schemes, which are endowed with an action…

Algebraic Geometry · Mathematics 2019-05-15 Shun Tang

We compute rational equivariant Chow rings with respect to a torus of quiver moduli spaces. We derive a presentation in terms of generators and relations, use torus localization to identify it as a subring of the Chow ring of the fixed…

Algebraic Geometry · Mathematics 2020-10-01 Hans Franzen

We give an explicit presentation of the integral Chow ring of a stack of smooth plane cubics. We also determine some relations in the general case of hypersurfaces of any dimension and degree.

Algebraic Geometry · Mathematics 2018-01-16 Damiano Fulghesu , Angelo Vistoli

In this article we show how one can use the local models of integrable Hamiltonian systems near critical points to prove a localization theorem for certain singular loci of integrables semi-toric systems for dimension greater than 4.

Symplectic Geometry · Mathematics 2015-10-07 Christophe Wacheux

We prove a general version of Quillen's Theorem B, for actions of simplicial categories, in an arbitrary left Bousfield localization of the homotopy theory of simplicial presheaves over a site. As special cases, we recover a version of the…

Algebraic Topology · Mathematics 2020-07-29 Ieke Moerdijk , Joost Nuiten

We compute the Chow motive and the Chow groups with rational coefficients of the Hilbert scheme of points on a smooth algebraic surface

Algebraic Geometry · Mathematics 2007-05-23 Mark Andrea de Cataldo , Luca Migliorini

We show that the equivariant Chow cohomology ring of a toric variety is naturally isomorphic to the ring of integral piecewise polynomial functions on the associated fan. This gives a large class of singular spaces for which localization…

Algebraic Geometry · Mathematics 2007-06-23 Sam Payne

Let $f : X \rightarrow B$ be a proper flat dominant morphism between two smooth quasi-projective complex varieties $X$ and $B$. Assume that there exists an integer $l$ such that all closed fibres $X_b$ of $f$ satisfy $CH_j(X_b) = \Q$ for…

Algebraic Geometry · Mathematics 2012-03-14 Charles Vial

We review and simplify A. Beilinson's construction of a basis for the motivic cohomology of a point over a cyclotomic field, then promote the basis elements to higher Chow cycles and evaluate the KLM regulator map on them.

Algebraic Geometry · Mathematics 2018-04-04 Matt Kerr , Yu Yang

We generalize the representation theorem of Junge, Neufang and Ruan [A representation theorem for locally compact quantum groups, Internat. J. Math. 20(3) (2009) 377-400], and some of the important results which were used in its proof, to…

Operator Algebras · Mathematics 2013-04-16 Mehrdad Kalantar

This paper will briefly survey some recent methods of localization in group rings, which work in more general contexts than the classical Ore localization. In particular the Cohn localization using matrices will be described, but other…

Rings and Algebras · Mathematics 2007-07-12 Peter A. Linnell

Contents * Introduction -- Why $S^1$-extended phase space? -- Why central extensions of classical symmetries? * Central extension \Gt of a group $G$ -- Group cohomology -- Cohomology and contractions: Pseudo-cohomology -- Principal bundle…

Mathematical Physics · Physics 2008-11-06 V. Aldaya , J. Guerrero , G. Marmo

We give an account of Bousfield localisation and colocalisation for one-dimensional model categories---ones enriched over the model category of $0$-types. A distinguishing feature of our treatment is that it builds localisations and…

Category Theory · Mathematics 2020-06-04 Scott Balchin , Richard Garner

We develop the K-theory of sets with an action of a pointed monoid (or monoid scheme), analogous to the $K$-theory of modules over a ring (or scheme). In order to form localization sequences, we construct the quotient category of a nice…

K-Theory and Homology · Mathematics 2021-09-08 Ian Coley , Charles Weibel

We compute the Chow group of zero-cycles on certain Ch{\^a}telet surfaces over local fields.

Algebraic Geometry · Mathematics 2008-07-09 Supriya Pisolkar

We study the localization of zeros of Cauchy transforms of discrete measures on the real line. This question is motivated by the theory of canonical systems of differential equations. In particular, we prove that the spaces of Cauchy…

Complex Variables · Mathematics 2014-10-03 Evgeny Abakumov , Anton Baranov , Yurii Belov

This talk is devoted mainly to the concept of higher-order polarization on a group, which is introduced in the framework of a Group Approach to Quantization, as a powerful tool to guarantee the irreducibility of quantizations and/or…

High Energy Physics - Theory · Physics 2009-10-28 V. Aldaya , J. Guerrero , G. Marmo

We prove a version of adelic descent for continuous localizing invariants.

Algebraic Geometry · Mathematics 2025-08-26 Grigorii Konovalov
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