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We prove a homological stability theorem for moduli spaces of high-dimensional, highly connected manifolds, with respect to forming the connected sum with the product of spheres $S^{p}\times S^{q}$, for $p < q < 2p - 2$. This result is…

Algebraic Topology · Mathematics 2014-09-29 Nathan Perlmutter

We show that for a smooth, projective variety X defined over a number field K, cyclic homology with coefficients in the ring of infinite adeles of K, provides the right theory to obtain, using the lambda-operations, Serre's archimedean…

Algebraic Geometry · Mathematics 2012-11-20 Alain Connes , Caterina Consani

Given a perversity function in the sense of intersection homology theory, the method of intersection spaces assigns to certain oriented stratified spaces cell complexes whose ordinary reduced homology with real coefficients satisfies…

Algebraic Topology · Mathematics 2019-10-23 Markus Banagl , Eugenie Hunsicker

We introduce an L-series associated with harmonic Maass forms and prove their functional equations. We establish converse theorems for these L-series and, as an application, we formulate and prove a summation formula for the holomorphic…

Number Theory · Mathematics 2024-02-20 Nikolaos Diamantis , Min Lee , Wissam Raji , Larry Rolen

We present a classification of homogeneous star products on duals of Lie algebroids in terms of the second Lie algebroid cohomology. Moreover, we extend this classification to projectable star products, i.e., to quantizations compatible…

Quantum Algebra · Mathematics 2025-07-04 Marvin Dippell , Chiara Esposito , Jonas Schnitzer

We show that Lupercio-Uribe-Xicot\'{e}ncatl's orbifold loop product and coproduct can be described by a group cohomology class in some cases. By computing this cohomology class, we show that in some cases the orbifold loop product is…

Algebraic Topology · Mathematics 2021-01-21 Yasuhiko Asao

We develop a homotopy theory for additive categories endowed with endofunctors, analogous to the concept of a model structure. We use it to construct the homotopy theory of a Hovey triple (which consists of two compatible complete cotorsion…

Representation Theory · Mathematics 2017-03-09 Zhi-Wei Li

We show that a class of algebras is closed under the taking of homomorphic images and direct products if and only if the class consists of all algebras that satisfy a set of (generally simultaneous) equations. For classes of regular…

Group Theory · Mathematics 2022-06-23 Peter M Higgins , Marcel Jackson

After introducing some cohomology classes as obstructions to orientation and spin structures etc., we explain some applications of cohomology to physical problems, in special to reduced holonomy in M- and F-theory.

Mathematical Physics · Physics 2007-05-23 Luis J. Boya

We show that the category of mixed Hodge complexes admits a Cartan-Eilenberg structure, a notion introduced in [GNPR10] leading to a good calculation of the homotopy category in terms of (co)fibrant objects. This result provides a…

Algebraic Geometry · Mathematics 2016-10-04 Joana Cirici , Francisco Guillén

This is an exposition of facts about p-local spectra, p-complete spectra and modules over the p-complete sphere spectrum, including homological criteria for finiteness. Most things are well-known to the experts, with a couple of potential…

Algebraic Topology · Mathematics 2024-12-13 Neil Strickland

Given a closed complex manifold $X$ of even dimension, we develop a systematic (vertex) algebraic approach to study the rational orbifold cohomology rings $\orbsym$ of the symmetric products. We present constructions and establish results…

Algebraic Geometry · Mathematics 2007-05-23 Zhenbo Qin , Weiqiang Wang

This is a survey on known results and open problems about closed aspherical manifolds, i.e., connected closed manifolds whose universal coverings are contractible. Many examples come from certain kinds of non-positive curvature conditions.…

Geometric Topology · Mathematics 2009-07-15 Wolfgang Lueck

We completely determine cohomology groups of sections of homogeneous line bundles over a toroidal group.

Complex Variables · Mathematics 2016-09-16 Yukitaka Abe

We study cohomological obstructions to the existence of global conserved quantities. In particular, we show that, if a given local variational problem is supposed to admit global solutions, certain cohomology classes cannot appear as…

Mathematical Physics · Physics 2015-10-30 M. Francaviglia , M. Palese , E. Winterroth

We introduce new variant of $H$-measures defined on spectra of general algebra of test symbols and derive the localization properties of such $H$-measures. Applications for the compensated compactness theory are given. In particular, we…

Analysis of PDEs · Mathematics 2014-03-26 Evgeny Yu. Panov

Following Eilenberg-Steenrod axiomatic approach we construct the universal ordinary homology theory for any homological structure on a given category by representing ordinary theories with values in abelian categories. For a convenient…

Algebraic Geometry · Mathematics 2022-05-18 L. Barbieri-Viale

We study fibred spaces with fibres in a structure category $\V$ and we show that cellular approximation, Blakers--Massey theorem, Whitehead theorems, obstruction theory, Hurewicz homomorphism, Wall finiteness obstruction, and Whitehead…

Algebraic Topology · Mathematics 2007-05-23 Hans-Joachim Baues , Davide L. Ferrario

Friedl and Kim show any taut sutured manifold can be realized as a twisted homology product, but their proof gives no practical description of how complicated the realizing representation needs to be. We give a number of results…

Geometric Topology · Mathematics 2018-10-31 Margaret Nichols

We develop category-theoretic framework for universal homogeneous objects, with some applications in the theory of Banach spaces, linear orderings, and in topology of compact spaces.

Category Theory · Mathematics 2013-03-12 Wieslaw Kubiś