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We discuss various constructions which allow one to embed a principally polarized abelian variety in the jacobian of a curve. Each of these gives representatives of multiples of the minimal cohomology class for curves which in turn produce…

Algebraic Geometry · Mathematics 2007-05-23 E. Izadi

We reinterpret Kim's non-abelian reciprocity maps for algebraic varieties as obstruction towers of mapping spaces of etale homotopy types, removing technical hypotheses such as global basepoints and cohomological constraints. We then extend…

Algebraic Topology · Mathematics 2020-04-29 J. P. Pridham

We start developing a notion of reciprocity sheaves, generalizing Voevodsky's homotopy invariant presheaves with transfers which were used in the construction of his triangulated categories of motives. We hope reciprocity sheaves will…

Algebraic Geometry · Mathematics 2019-02-20 Bruno Kahn , Shuji Saito , Takao Yamazaki

Let $R$ be a commutative artinian ring. We extend higher Auslander correspondence from Artin $R$-algebras of finite representation type to dualizing $R$-varieties. More precisely, for a positive integer $d$, we show that a dualizing…

Representation Theory · Mathematics 2017-06-15 Osamu Iyama , Gustavo Jasso

We formulate higher order variations of a Lagrangian in the geometric framework of jet prolongations of fibered manifolds. Our formalism applies to Lagrangians which depend on an arbitrary number of independent and dependent variables,…

Mathematical Physics · Physics 2022-01-03 M. Francaviglia , M. Palese , R. Vitolo

The aim of this work is to offer a general theory of reciprocity laws for symbols on arbitrary vector spaces, and to show that classical explicit reciprocity laws are particular cases of this theory (sum of valuations on a complete curve,…

Number Theory · Mathematics 2020-07-07 Fernando Pablos Romo

We prove that the classical algebraic varieties over algebraically closed fields can be defined over arbitrary fields $k.$ Then we prove that for associative algebras $A$, there exist local representing objects $A_M$ for simple modules $M.$…

Algebraic Geometry · Mathematics 2026-04-14 Arvid Siqveland

We establish the reciprocity law along a vertical curve for residues of differential forms on arithmetic surfaces, and describe Grothendieck's trace map of the surface as a sum of residues. Points at infinity are then incorporated into the…

Algebraic Geometry · Mathematics 2015-03-17 Matthew Morrow

Unlike Abel map of the symmetric power of a Riemann surface onto its Jacobian, the Abel--Prym map generically can not be reversed by means of conventional technique related to the Jacobi inversion problem, and of its main ingredient, namely…

Algebraic Geometry · Mathematics 2025-07-18 O. K. Sheinman

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

To every double cover ramified in two points of a general trigonal curve of genus g, one can associate an \'etale double cover of a tetragonal curve of genus g+1. We show that the corresponding Prym varieties are canonically isomorphic as…

Algebraic Geometry · Mathematics 2019-02-04 Herbert Lange , Angela Ortega

We investigate the resonance varieties attached to a commutative differential graded algebra and to a representation of a Lie algebra, with emphasis on how these varieties behave under finite products and coproducts.

Algebraic Topology · Mathematics 2014-10-28 Stefan Papadima , Alexander I. Suciu

The Prym map assigns to each covering of curves a polarized abelian variety. In the case of unramified cyclic covers of curves of genus two, we show that the Prym map is ramified precisely on the locus of bielliptic covers. The key…

Algebraic Geometry · Mathematics 2024-06-19 Daniele Agostini

In this paper we show that non abelian extensions of an associative algebra $\mathcal{B}$ by an associative algebra $\mathcal{A}$ can be viewed as Maurer-Cartan elements of a suitable differential graded Lie algebra $L$. In particular we…

Algebraic Topology · Mathematics 2018-02-14 Jean-Baptiste Gouray

Recurrence formulae for arbitrary hydrogenic radial matrix elements are obtained in the Dirac form of relativistic quantum mechanics. Our approach is inspired on the relativistic extension of the second hypervirial method that has been…

Quantum Physics · Physics 2009-11-06 R P Martínez-y-Romero , H N Núñez-Yépez , A L Salas-Brito

We construct a theory of higher local symbols along Parsin chains for reciprocity sheaves. Applying this formalism to differential forms, gives a new construction of the Parsin-Lomadze residue maps, and applying it to the torsion characters…

Algebraic Geometry · Mathematics 2023-04-28 Kay Rülling , Shuji Saito

We study in this paper some criterions to get polarized morphisms between abelian varieties. We deduce explicit dynamical systems with particular intersection properties.

Number Theory · Mathematics 2015-07-02 Fabien Pazuki

It is known that the etale cohomology of a potentially good abelian variety over a local field K is determined by its Euler factors over the extensions of K. We extend this to all abelian varieties, show that it is enough to take extensions…

Number Theory · Mathematics 2026-01-13 Tim Dokchitser , Vladimir Dokchitser

Let $V$ be a vertex algebra and $M$ a $V$-module. We define the first and second cohomology of $V$ with coefficients in $M$, and we show that the second cohomology $H^{2}(V, M)$ corresponds bijectively to the set of equivalence classes of…

Quantum Algebra · Mathematics 2016-03-28 Jose I. Liberati

In his article "Unitary Representations and Complex Analysis", David Vogan gives a characterization of the continuous invariant Hermitian forms defined on the compactly supported sheaf cohomology groups of certain homogeneous analytic…

Representation Theory · Mathematics 2022-07-29 Tim Bratten , Mauro Natale