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In this paper we prove the equivalence of two symmetric monoidal $\infty$-categories of $\infty$-operads, the one defined in Lurie's book on Higher Algebra and the one based on dendroidal spaces. V.2 Some corrections made and exposition…

Category Theory · Mathematics 2024-10-10 Vladimir Hinich , Ieke Moerdijk

A two-dimensional chiral conformal field theory can be viewed mathematically as the representation theory of its chiral algebra, a vertex operator algebra. Vertex operator algebras are especially well suited for studying logarithmic…

Quantum Algebra · Mathematics 2021-04-20 Robert McRae

Given a (colored) operad and a set of unary operations, we can form an associated $\infty$-operad via localization. We show that localization determines an equivalence of homotopy theories of relative operads and $\infty$-operads. As an…

Algebraic Topology · Mathematics 2025-12-19 Kensuke Arakawa , Victor Carmona , Francesca Pratali

We show a first rectification result for homotopy chain coalgebras over a field. On the one hand, we consider the $\infty$-category obtained by localizing differential graded coalgebras over an operad with respect to quasi-isomorphisms; on…

Algebraic Topology · Mathematics 2026-04-21 Dan Petersen , Victor Roca i Lucio , Sinan Yalin

Operadic tangent cohomology generalizes the existing cohomology theories of Chevalley--Eilenberg, Hochschild, and Harrison to address the deformation theory of general types of algebras through gadgets known as deformation complexes. The…

Algebraic Topology · Mathematics 2026-03-12 José Moreno-Fernández , Pedro Tamaroff

We define and study binary operations for homotopy groups with coefficients. We give conditions to prove that certain binary operations are the homomorphic image of the generalized Whitehead product. This allows carrying over properties of…

Algebraic Topology · Mathematics 2017-08-28 Martin Arkowitz

Let $\Lambda$ be the category of based finite sets $\mathbf{n}$ and based injections. We study properties of monoids and modules in $\Lambda$-sequences under the Kelly monoidal structure. In particular, we show that the forgetful functor…

Algebraic Topology · Mathematics 2026-02-16 Aowen Fan , Foling Zou

We introduce a symmetric operad $\square p$ ("box-op") which describes a certain calculus of rectangular labeled ``boxes''. Algebras over $\square p$, which we call box operads, have appeared under the name of fc multicategories in work by…

Algebraic Topology · Mathematics 2023-06-29 Hoang Dinh Van , Lander Hermans , Wendy Lowen

We give a solution, via operator spaces, of an old problem in the Morita equivalence of C*-algebras. Namely, we show that C*-algebras are strongly Morita equivalent in the sense of Rieffel if and only if their categories of left operator…

Operator Algebras · Mathematics 2007-05-23 David P. Blecher

This paper sets up the foundations for derived algebraic geometry, Goerss--Hopkins obstruction theory, and the construction of commutative ring spectra in the abstract setting of operadic algebras in symmetric spectra in an (essentially)…

Algebraic Topology · Mathematics 2020-06-03 Dmitri Pavlov , Jakob Scholbach

We study the (\infty, 1)-category of autoequivalences of \infty-operads. Using techniques introduced by To\"en, Lurie, and Barwick and Schommer-Pries, we prove that this (\infty, 1)-category is a contractible \infty-groupoid. Our…

Algebraic Topology · Mathematics 2020-09-07 Dimitri Ara , Moritz Groth , Javier J. Gutiérrez

We develop a Gabriel-Morita theory for strong monads on pointed monoidal model categories. Assuming that the model category is excisive, i.e. the derived suspension functor is conservative, we show that if the monad T preserves cofibre…

Algebraic Topology · Mathematics 2017-10-23 Clemens Berger , Kruna Ratkovic

The associative operad is a certain algebraic structure on the sequence of group algebras of the symmetric groups. The weak order is a partial order on the symmetric group. There is a natural linear basis of each symmetric group algebra,…

Quantum Algebra · Mathematics 2007-05-23 Marcelo Aguiar , Muriel Livernet

We give a full classification of all braided semisimple tensor categories whose Grothendieck semiring is the one of Rep(O(\infty) (formally), Rep(O(N), Rep(Sp(N) or of one of its associated fusion categories. If the braiding is not…

Quantum Algebra · Mathematics 2020-02-13 Imre Tuba , Hans Wenzl

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

We extend bar-cobar duality, defined for operads of chain complexes by Getzler and Jones, to operads of spectra in the sense of stable homotopy theory. Our main result is the existence of a Quillen equivalence between the category of…

Algebraic Topology · Mathematics 2014-02-26 Michael Ching

We study the "higher algebra" of spectral Mackey functors, which the first named author introduced in Part I of this paper. In particular, armed with our new theory of symmetric promonoidal $\infty$-categories and a suitable generalization…

Algebraic Topology · Mathematics 2019-04-03 C. Barwick , S. Glasman , J. Shah

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 describe a category of undirected graphs which comes equipped with a faithful functor into the category of (colored) modular operads. The associated singular functor from modular operads to presheaves is fully faithful, and its essential…

Category Theory · Mathematics 2020-07-03 Philip Hackney , Marcy Robertson , Donald Yau

For a smooth affine algebraic group $G$, one can attach various D-module categories to it that admit convolution monoidal structure. We consider the derived category of D-modules on $G$, the stack $G/G_{ad}$ and the category of…

Representation Theory · Mathematics 2026-01-15 Wenjun Niu