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Related papers: Dwyer--Kan homotopy theory for cyclic operads

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We define the concept of a bi-operad. We develop the homotopy theory of "Bital-Sets" and of infinite-bi-operads. We develop a geometry of generalized schemes based on the spectra of distributive monochromatic bi-operads.

Algebraic Topology · Mathematics 2022-04-08 Shai Haran

First, we give a functorial construction of a group associated to a symmetric operad. Applied to the endomorphism operad it gives the group of formal diffeomorphisms. Second, we associate a symmetric operad to any family of decorated graphs…

Mathematical Physics · Physics 2012-02-07 Jean-Louis Loday , Nikolay M. Nikolov

We introduce a class of good endofunctors of $C^{*}$-algebras, endow it with a structure of a bimonoidal category, and define homotopies of natural transformations between such endofunctors. For every pair of $C^{*}$-algebras and a good…

Operator Algebras · Mathematics 2025-09-03 Georgii S. Makeev

We extend some classical results - such as Quillen's Theorem A, the Grothendieck construction, Thomason's Theorem and the characterisation of homotopically cofinal functors - from the homotopy theory of small categories to polynomial monads…

Algebraic Topology · Mathematics 2020-01-16 Michael Batanin , Florian De Leger

A new anticyclic operad Mould is introduced, on spaces of functions in several variables. It is proved that the Dendriform operad is an anticyclic suboperad of this operad. Many operations on the free Mould algebra on one generator are…

Quantum Algebra · Mathematics 2008-02-28 Frédéric Chapoton

We give a short topological proof of coherence for categorified non-symmetric operads by using the fact that the diagrams involved form the 1-skeleton of simply connected CW complexes. We also obtain a "one-step" topological proof of Mac…

Algebraic Topology · Mathematics 2024-11-01 Pierre-Louis Curien , Guillaume Laplante-Anfossi

In this paper we study the question of how to transfer homotopic structure from the category sD of simplicial objects in a fixed category D to D. To this end we use a sort of homotopy colimit s : sD --> D, which we call simple functor. For…

Algebraic Geometry · Mathematics 2011-10-12 Beatriz Rodriguez Gonzalez

In this paper one considers three homotopy functors on the category of manifolds, $hH^\ast, cH^\ast, sH^\ast,$ and parallel them with other three homotopy functors on the category of connected commutative differential graded algebras,…

Algebraic Topology · Mathematics 2009-05-12 Dan Burghelea

We introduce the notion of homotopy inner products for any cyclic quadratic Koszul operad $\mathcal O$, generalizing the construction already known for the associative operad. This is done by defining a colored operad $\hat{\mathcal O}$,…

Algebraic Topology · Mathematics 2007-05-23 Riccardo Longoni , Thomas Tradler

The question "What is category theory" is approached by focusing on universal mapping properties and adjoint functors. Category theory organizes mathematics using morphisms that transmit structure and determination. Structures of…

Category Theory · Mathematics 2007-05-23 David Ellerman

The purpose of this paper is to investigate the relationship between hairy graph complexes associated to cyclic operads and their counterparts for operads (and, more generally, dioperads). This is based on the author's interpretation of…

Algebraic Topology · Mathematics 2026-04-16 Geoffrey Powell

This paper studies the homotopy theory of the Grothendieck construction using model categories and semi-model categories, provides a unifying framework for the homotopy theory of operads and their algebras and modules, and uses this…

Algebraic Topology · Mathematics 2026-05-20 Michael Batanin , Florian De Leger , David White

We prove, under mild assumptions, that a Quillen equivalence between symmetric monoidal model categories gives rise to a Quillen equivalence between their model categories of (non-symmetric) operads, and also between model categories of…

Algebraic Topology · Mathematics 2014-11-11 Fernando Muro

We introduce an operadic notion of spectrum for algebras over colored operads in a symmetric monoidal category. The construction is defined via a canonical Hochschild-type object together with an operadic residue, which together encode…

Category Theory · Mathematics 2026-04-21 Shih-Yu Chang

In this short note, we classify linear categorified open topological field theories in dimension two by pivotal Grothendieck-Verdier categories, a type of monoidal category equipped with a weak, not necessarily rigid duality. In combination…

Quantum Algebra · Mathematics 2025-08-01 Lukas Müller , Lukas Woike

Generalized operads, also called generalized multicategories and $T$-monoids, are defined as monads within a Kleisli bicategory. With or without emphasizing their monoidal nature, generalized operads have been considered by numerous authors…

Category Theory · Mathematics 2015-04-22 Dimitri Chikhladze

This is an expository article about operads in homotopy theory written as a chapter for an upcoming book. It concentrates on what the author views as the basic topics in the homotopy theory of operadic algebras: the definition of operads,…

Algebraic Topology · Mathematics 2022-01-04 Michael A. Mandell

Indexed symmetric monoidal categories are an important refinement of bicategories -- this structure underlies several familiar bicategories, including the homotopy bicategory of parametrized spectra, and its equivariant and fiberwise…

Category Theory · Mathematics 2023-06-21 Cary Malkiewich , Kate Ponto

The structure of the category of matroids and strong maps is investigated: it has coproducts and equalizers, but not products or coequalizers; there are functors from the categories of graphs and vector spaces, the latter being faithful;…

Category Theory · Mathematics 2020-12-03 Chris Heunen , Vaia Patta

Unimodal (i.e. single-humped) permutations may be decomposed into a product of disjoint cycles. Some enumerative results concerning their cyclic structure -- e.g. 2/3 of them contain fixed points -- are given. We also obtain in effect a…

Dynamical Systems · Mathematics 2007-05-23 T. Gannon