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We introduce the symmetricity notions of symmetric h-monoidality, symmetroidality, and symmetric flatness. As shown in our paper arXiv:1410.5675, these properties lie at the heart of the homotopy theory of colored symmetric operads and…

Algebraic Topology · Mathematics 2020-06-02 Dmitri Pavlov , Jakob Scholbach

For our concepts of change of base and comonadicity, we work in the general context of the tricategory $\mathrm{Caten}$ whose objects are bicategories $\mathscr{V}$ and whose morphisms are categories enriched on two sides. For example, for…

Category Theory · Mathematics 2021-12-10 Branko Nikolić , Ross Street

We study the homotopy right Kan extension of homotopy sheaves on a category to its free cocompletion, i.e. to its category of presheaves. Any pretopology on the original category induces a canonical pretopology of generalised coverings on…

Algebraic Topology · Mathematics 2023-10-16 Severin Bunk

We give a purely derivator-theoretical reformulation and proof of a classic result of Happel and Ladkani, showing that it occurs uniformly across stable derivators and it is then independent of coefficients. The resulting equivalence…

Representation Theory · Mathematics 2025-08-05 Chiara Sava

Coherence theorems for covariant structures carried by a category have traditionally relied on the underlying term rewriting system of the structure being terminating and confluent. While this holds in a variety of cases, it is not a…

Category Theory · Mathematics 2007-05-31 Jonathan A. Cohen

We formulate an elementary condition on an involutive quantaloid Q under which there is a distributive law from the Cauchy completion monad over the symmetrisation comonad on the category of Q-enriched categories. For such quantaloids,…

Category Theory · Mathematics 2011-06-24 Hans Heymans , Isar Stubbe

We distinguish between faint, weak, strong and strict localizations of categories at morphism families and show that this framework captures the different types of derived functors that are considered in the literature. More precisely, we…

Algebraic Topology · Mathematics 2021-09-28 Alisa Govzmann , Damjan Pištalo , Norbert Poncin

We develop Morita theory of monoids in a closed symmetric monoidal category, in the context of enriched category theory.

Category Theory · Mathematics 2024-10-23 Jaehyeok Lee , Jae-Suk Park

A monoid structure on families of representations of a quiver is introduced by taking extensions of representations in families, i.e. subvarieties of the varieties of representations. The study of this monoid leads to interesting…

Rings and Algebras · Mathematics 2007-05-23 Markus Reineke

We quadratically enrich Mikhalkin's correspondence theorem. That is, we prove a correspondence between algebraic curves on a toric surface counted with Levine's quadratic enrichment of the Welschinger sign, and tropical curves counted with…

Algebraic Geometry · Mathematics 2024-04-16 Andrés Jaramillo Puentes , Sabrina Pauli

We study the totality of categories weakly enriched in a monoidal bicategory using a notion of enriched icon as 2-cells. We show that when the monoidal bicategory in question is symmetric then this process can be iterated. We show that…

Category Theory · Mathematics 2013-08-30 Eugenia Cheng , Nick Gurski

The 2-category V-Cat of categories enriched over a braided monoidal category V is not itself braided in any way that is based upon the braiding of V. The exception is the case in which V is symmetric, which leads to V-Cat being symmetric as…

Category Theory · Mathematics 2007-05-23 Stefan Forcey

We define Euler characteristic of a category enriched by a monoidal model category. If a monoidal model category V is equipped with Euler characteristic that is compatible with weak equivalences and fibrations in V, then our Euler…

Category Theory · Mathematics 2016-11-25 Kazunori Noguchi , Kohei Tanaka

The Chern-Dold character of a cohomology theory E is a canonical transformation $E\rightarrow HV$ to ordinary cohomology. A spectrum representing E gives homotopy theoretic cocycles for E, while HV can be represented by singular cocycles.…

Algebraic Topology · Mathematics 2014-04-09 Markus Upmeier

In this paper, we extend diagrammatic reasoning in monoidal categories with algebraic operations and equations. We achieve this by considering monoidal categories that are enriched in the category of Eilenberg-Moore algebras for a monad.…

Logic in Computer Science · Computer Science 2024-01-30 Alejandro Villoria , Henning Basold , Alfons Laarman

This paper gives an introduction and overview about recent developments on the interaction of the theories of characteristic classes and mixed Hodge theory for singular spaces in the complex algebraic context. It uses M. Saito's deep theory…

Algebraic Geometry · Mathematics 2010-12-17 Joerg Schuermann

Let $\mathcal C$ be a $\mathcal V$-enriched model category. We say that an object $x$ of $\mathcal C$ is homotopy tiny if the total right derived functor of $\mathcal C(x, -) : \mathcal{C} \rightarrow {\mathcal V}$ preserves homotopy…

Algebraic Topology · Mathematics 2022-04-04 Anna Giulia Montaruli

In this paper we construct a cofibrantly generated model category structure on the category of all small symmetric multicategories enriched in simplicial sets.

Algebraic Topology · Mathematics 2011-11-18 Marcy Robertson

We prove that the category of dg-coalgebras is symmetric monoidal closed and that the category of dg-algebras is enriched, tensored, cotensored and strongly monoidal over that of coalgebras. We apply this formalism to reconstruct several…

Category Theory · Mathematics 2013-09-27 Matthieu Anel , André Joyal

It is proved that the category of simplicial complete bornological spaces over $\mathbb R$ carries a combinatorial monoidal model structure satisfying the monoid axiom. For any commutative monoid in this category the category of modules is…

Differential Geometry · Mathematics 2017-07-31 Dennis Borisov , Kobi Kremnizer