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We develop a homotopical variant of the classic notion of an algebraic theory as a tool for producing deformations of homotopy theories. From this, we extract a framework for constructing and reasoning with obstruction theories and spectral…

Algebraic Topology · Mathematics 2025-08-13 William Balderrama

We study the Stokes phenomenon for the solutions of general homogeneous linear moment partial differential equations with constant coefficients in two complex variables under condition that the Cauchy data are holomorphic on the complex…

Analysis of PDEs · Mathematics 2019-11-28 Sławomir Michalik , Bożena Tkacz

This paper develops a basic theory of H-groups. We introduce a special quotient of H-groups and extend some algebraic constructions of topological groups to the category of H-groups and H-maps. We use these constructions to prove some…

Algebraic Topology · Mathematics 2010-09-28 Ali Pakdaman , Hamid Torabi , Behrooz Mashayekhy

We study the homotopy theory of diagrams of chain complexes over a field indexed by a finite poset, and show that it can be completely described in terms of appropriate diagrams of graded vector spaces.

Algebraic Topology · Mathematics 2024-04-05 David Blanc , Surojit Ghosh , Aziz Kharoof

Homotopy type theory is an interpretation of Martin-L\"of's constructive type theory into abstract homotopy theory. There results a link between constructive mathematics and algebraic topology, providing topological semantics for…

Logic · Mathematics 2023-03-31 Steve Awodey , Nicola Gambino , Kristina Sojakova

This book is an account of certain topics in general and algebraic topology. Instead of laying out a synopsis of each chapter, here is a sample of some of what is taken up: 1) Nilpotency and its role in homotopy theory. 2) Bousfield's…

Algebraic Topology · Mathematics 2022-12-06 Garth Warner

We define a new version of Topological Complexity (TC) of a space, denoted as $\text{dTC}$, which, we think, fits better for motion planning for some autonomous systems. Like Topological complexity, \text{dTC} is also a homotopy invariant.…

Geometric Topology · Mathematics 2024-09-09 Alexander Dranishnikov , Ekansh Jauhari

The intended model of the homotopy type theories used in Univalent Foundations is the infinity-category of homotopy types, also known as infinity-groupoids. The problem of higher structures is that of constructing the homotopy types needed…

Logic · Mathematics 2018-07-09 Ulrik Buchholtz

We define an unstable equivariant motivic homotopy category for an algebraic group over a Noetherian base scheme. We show that equivariant algebraic $K$-theory is representable in the resulting homotopy category. Additionally, we establish…

Algebraic Topology · Mathematics 2015-10-19 Jeremiah Heller , Amalendu Krishna , Paul Arne Ostvaer

Topological statistical theory provides the foundation for a modern mathematical reformulation of classical statistical theory: Structural Statistics emphasizes the structural assumptions that accompany distribution families and the set of…

Statistics Theory · Mathematics 2020-06-23 Patrick Michl

We introduce a notion of categorical homotopic distance between functors by adapting the notion of homotopic distance in topological spaces, recently defined by the authors to the context of small categories. Moreover, this notion…

Algebraic Topology · Mathematics 2019-02-19 E. Macías-Virgós , D. Mosquera-Lois

We generalize the concepts of locally presentable and accessible categories. Our framework includes such categories as small presheaves over large categories and ind-categories. This generalization is intended for applications in the…

Category Theory · Mathematics 2012-06-05 Boris Chorny , Jiri Rosicky

Vietoris-Rips and degree Rips complexes are represented as homotopy types by their underlying posets of simplices, and basic homotopy stability theorems are recast in these terms. These homotopy types are viewed as systems (or functors),…

Algebraic Topology · Mathematics 2020-10-28 J. F. Jardine

We introduce fibred type-theoretic fibration categories which are fibred categories between categorical models of Martin-L\"{o}f type theory. Fibred type-theoretic fibration categories give a categorical description of logical predicates…

Category Theory · Mathematics 2017-09-25 Taichi Uemura

We prove that the homotopy theory of cofibration categories is equivalent to the homotopy theory of cocomplete quasicategories. This is achieved by presenting both homotopy theories as fibration categories and constructing an explicit…

Algebraic Topology · Mathematics 2014-11-04 Karol Szumiło

In this expository article, we give the foundations, basic facts, and first examples of unstable motivic homotopy theory with a view towards the approach of Asok-Fasel to the classification of vector bundles on smooth complex affine…

Algebraic Geometry · Mathematics 2016-11-08 Benjamin Antieau , Elden Elmanto

This paper studies the homotopy theory of algebras and homotopy algebras over an operad. It provides an exhaustive description of their higher homotopical properties using the more general notion of morphisms called infinity-morphisms. The…

Algebraic Topology · Mathematics 2016-02-09 Bruno Vallette

We prove a new localization theorem for stable model categories if the localizing subcategory is generated by a precovering class in the model category. We use this to show how one may explicitly realize certain Bousfield localization…

Category Theory · Mathematics 2007-10-30 Matthew Grime

We define a notion of "theory of (1,infty)-categories", and we prove that such a theory is unique up to equivalence.

Category Theory · Mathematics 2007-05-23 B. Toen

Homotopy type theory is a new branch of mathematics, based on a recently discovered connection between homotopy theory and type theory, which brings new ideas into the very foundation of mathematics. On the one hand, Voevodsky's subtle and…

Logic · Mathematics 2013-08-06 The Univalent Foundations Program
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