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Related papers: Group operads as crossed interval groups

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This paper gives an explicit description of the categorical operad whose algebras are precisely symmetric monoidal categories. This allows us to place the operad in a sequence of four, and therefore a sequence of four successively stricter…

Category Theory · Mathematics 2023-05-26 A. D. Elmendorf

This monograph provides a coherent development of operads, infinity operads, and monoidal categories, equipped with equivariant structures encoded by an action operad. A group operad is a planar operad with an action operad equivariant…

Category Theory · Mathematics 2022-03-08 Donald Yau

Operads may be represented as symmetric monoidal functors on a small symmetric monoidal category. We discuss the axioms which must be imposed on a symmetric monoidal functor in order that it give rise to a theory similar to the theory of…

Category Theory · Mathematics 2018-01-16 Ezra Getzler

We introduce and study structured enhancement of the notion of a crossed simplicial group, which we call an operadic crossed simplicial group. We show that with each operadic crossed simplicial group one can associate a certain operad in…

Algebraic Topology · Mathematics 2025-12-17 Artem Semidetnov

We give a description of unital operads in a symmetric monoidal category as monoids in a monoidal category of unital $\Lambda$-sequences. This is a new variant of Kelly's old description of operads as monoids in the monoidal category of…

Algebraic Topology · Mathematics 2024-11-26 J. P. May , Ruoqi Zhang , Foling Zou

We give a definition of an operad with general groups of equivariance suitable for use in any symmetric monoidal category with appropriate colimits. We then apply this notion to study the 2-category of algebras over an operad in Cat. We…

Category Theory · Mathematics 2014-02-28 Alexander S. Corner , Nick Gurski

The notion of 2--monoidal category used here was introduced by B.~Vallette in 2007 for applications in the operadic context. The starting point for this article was a remark by Yu. Manin that in the category of quadratic algebras (that is,…

Category Theory · Mathematics 2019-03-01 Yuri I. Manin , Bruno Vallette

In this paper, we state and prove precise theorems on the classification of the category of (braided) categorical groups and their (braided) monoidal functors, and some applications obtained from the basic studies on monoidal functors…

Category Theory · Mathematics 2013-01-04 Nguyen Tien Quang , Nguyen Thu Thuy , Pham Thi Cuc

We use Lurie's symmetric monoidal envelope functor to give two new descriptions of $\infty$-operads: as certain symmetric monoidal $\infty$-categories whose underlying symmetric monoidal $\infty$-groupoids are free, and as certain symmetric…

Category Theory · Mathematics 2022-09-13 Rune Haugseng , Joachim Kock

Inspired by recent work of Batanin and Berger on the homotopy theory of operads, a general monad-theoretic context for speaking about structures within structures is presented, and the problem of constructing the universal ambient structure…

Category Theory · Mathematics 2015-11-18 Mark Weber

We propose a new model for multicategories with symmetries with respect to Zhang's group operads. The fully faithful embedding of the category of group operads into that of crossed interval groups is made use of, and it is shown that every…

Category Theory · Mathematics 2018-07-06 Jun Yoshida

We describe a Grothendieck construction for non-symmetric operads with values in categories, and hence in groupoids and posets. The construction produces a 2-category which is operadically fibered over the category D of finite non-empty…

Category Theory · Mathematics 2026-01-28 Dominik Trnka

I describe a generalization of the notion of operadic category due to Batanin and Markl. For each such operadic category I describe a skew monoidal category of collections, such that a monoid in this skew monoidal category is precisely an…

Category Theory · Mathematics 2019-07-08 Stephen Lack

Operads were originally defined as V-operads, that is, enriched in a symmetric or braided monoidal category V. The symmetry or braiding in V is required in order to describe the associativity axiom the operads must obey, as well as the…

Category Theory · Mathematics 2007-05-23 S. Forcey , J. Siehler , E. Seth Sowers

We develop a notion of iterated monoidal category and show that this notion corresponds in a precise way to the notion of iterated loop space. Specifically the group completion of the nerve of such a category is an iterated loop space and…

Algebraic Topology · Mathematics 2007-05-23 C. Balteanu , Z. Fiedorowicz , R. Schwaenzl , R. Vogt

We introduce unary operadic 2-categories as a framework for operadic Grothendieck construction for categorical $\mathbb{O}$-operads, $\mathbb{O}$ being a unary operadic category. The construction is a fully faithful functor…

Category Theory · Mathematics 2024-10-08 Dominik Trnka

We prove that the operad B of natural operations on the Hochschild cohomology has the homotopy type of the operad of singular chains on the little disks operad. To achieve this goal, we introduce crossed interval groups and show that B is a…

Algebraic Topology · Mathematics 2012-08-14 Michael Batanin , Martin Markl

The purpose of this paper is two-fold. In Part 1 we introduce a new theory of operadic categories and their operads. This theory is, in our opinion, of an independent value. In Part 2 we use this new theory together with our previous…

Algebraic Topology · Mathematics 2015-07-15 Michael Batanin , Martin Markl

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

We show that every action operad gives rise to a notion of monoidal category via the categorical version of the Borel construction, embedding action operads into the category of 2-monads on $\mathbf{Cat}$. We characterize those 2-monads in…

Category Theory · Mathematics 2015-08-18 Nick Gurski
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