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Let M be a bicomplete, closed symmetric monoidal category. Let P be an operad in M, i.e., a monoid in the category of symmetric sequences of objects in M, with its composition monoidal structure. Let R be a P-co-ring, i.e., a comonoid in…

Algebraic Topology · Mathematics 2007-05-23 Kathryn Hess , Paul-Eugene Parent , Jonathan Scott

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

We present a Markl-style definition of operads colored by a small category. In the presence of a unit these are equivalent to substitudes of Day and Street. We show that operads colored by a category are internal algebras of a certain…

Category Theory · Mathematics 2023-11-21 Dominik Trnka

An operad structure on certain bicoloured noncrossing configurations in regular polygons is studied. Motivated by this study, a general functorial construction of enveloping operad, with input a coloured operad and output an operad, is…

Combinatorics · Mathematics 2014-10-14 Frédéric Chapoton , Samuele Giraudo

This paper proves that homology equivalences of cogenerating complexes induce homology equivalences of the cofree coalgebras in many interesting cases. We show that the underlying chain complex of any cofree coalgebra is naturally a direct…

Algebraic Topology · Mathematics 2007-05-23 Justin R. Smith

We explain how the simplicial higher-order unstable homotopy operations defined in [BBS2] may be composed and inserted one in another, thus forming a coherent if complicated algebraic structure.

Algebraic Topology · Mathematics 2025-11-06 Samik Basu , David Blanc , Debasis Sen

This chapter describes interrelations between: (1) algebraic structure on sets of scalars, (2) properties of monads associated with such sets of scalars, and (3) structure in categories (esp. Lawvere theories) associated with these monads.…

Rings and Algebras · Mathematics 2011-11-01 Dion Coumans , Bart Jacobs

In this short note, we provide OPEs for several affine W-algebras associated with Lie algebras of rank two and give some direct applications.

Mathematical Physics · Physics 2022-11-18 Justine Fasquel

Curved algebras are a generalization of differential graded algebras which have found numerous applications recently. The goal of this foundational article is to introduce the notion of a curved operad, and to develop the operadic calculus…

Algebraic Topology · Mathematics 2023-12-12 Victor Roca i Lucio

We provide a very general approach to placing model structures and semi-model structures on algebras over symmetric colored operads. Our results require minimal hypotheses on the underlying model category $\mathcal{M}$, and these hypotheses…

Algebraic Topology · Mathematics 2021-09-14 David White , Donald Yau

This work adapts the equivalent definitions of division algebras over a field into multiple types of division algebras in a monoidal category. Examples and consequences of these definitions are then established in various monoidal settings.

Quantum Algebra · Mathematics 2025-11-18 Jacob Kesten , Chelsea Walton

We construct a configuration space model for a particular 2-colored differential graded operad encoding the structure of two $A_\infty$ algebras with two $A_\infty$ morphisms and a homotopy between the morphisms. The cohomology of this…

Quantum Algebra · Mathematics 2015-02-10 Theo Backman

The paper summarizes the construction of pairings on some standard spectral sequences in algebraic topology.

Algebraic Topology · Mathematics 2007-05-23 Daniel Dugger

Algebraic effects offer a versatile framework that covers a wide variety of effects. However, the family of operations that delimit scopes are not algebraic and are usually modelled as handlers, thus preventing them from being used freely…

Programming Languages · Computer Science 2022-01-26 Zhixuan Yang , Marco Paviotti , Nicolas Wu , Birthe van den Berg , Tom Schrijvers

We discuss selected topics on the topology of moduli spaces of curves and maps, emphasizing their relation with Gromov--Witten theory and integrable systems.

Algebraic Geometry · Mathematics 2008-09-12 Y. -P. Lee , R. Vakil

We investigate algebraic structures within sets of surjective and injective linear operators between sequence spaces, completing results of Aron et al.

Functional Analysis · Mathematics 2020-07-14 Diogo Diniz , Vinícius Fávaro , Daniel Pellegrino , Anselmo Raposo

The notion of vertex operator coalgebra is presented which corresponds to the family of correlation functions of one string propagating in space-time splitting into n strings in conformal field theory. This notion is in some sense dual to…

Quantum Algebra · Mathematics 2007-05-23 Keith Hubbard

This paper describes a higher-categorical version of the theory of colored operads, giving applications to the study of commutative ring spectra.

Category Theory · Mathematics 2009-05-04 Jacob Lurie

We explore the possibility of extending Mardare et al. quantitative algebras to the structures which naturally emerge from Combinatory Logic and the lambda-calculus. First of all, we show that the framework is indeed applicable to those…

Logic in Computer Science · Computer Science 2022-04-29 Ugo Dal Lago , Furio Honsell , Marina Lenisa , Paolo Pistone

An elegant description of the general form of order automorphisms of effect algebras has been known in the complex case. We present a much simpler proof based on the projective geometry which works also in the real case. As an application…

Functional Analysis · Mathematics 2026-02-25 Peter Semrl