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Language theory, symbolic dynamics, modelisation of viral insertion into the genetic code of a host cell motivate the introduction of new types of bialgebras whose coalgebra parts are not necessarily coassociative. One of the aim of this…

Quantum Algebra · Mathematics 2007-05-23 Leroux Philippe

We prove that the algebra $\cal{A}$ of chord diagrams, the dual to the associated graded algebra of Vassiliev knot invariants, is isomorphic to the universal enveloping algebra of a Casimir Lie algebra in a certain tensor category (the PROP…

Quantum Algebra · Mathematics 2009-09-25 Vladimir Hinich , Arkady Vaintrob

In this article we give a construction of a polynomial 2-monad from an operad and describe the algebras of the 2-monads which then arise. This construction is different from the standard construction of a monad from an operad in that the…

Category Theory · Mathematics 2015-11-18 Mark Weber

Curved algebras are algebras endowed with a predifferential, which is an endomorphism of degree -1 whose square is not necessarily 0. This makes the usual definition of quasi-isomorphism meaningless and therefore the homotopical study of…

Algebraic Topology · Mathematics 2025-06-24 Joan Bellier-Millès , Gabriel C. Drummond-Cole

We resolve a ten year old open question of Loday of describing Koszul operads that act on the algebra of octonions. In fact, we obtain the answer by solving a more general classification problem: we find all Koszul operads among those…

Rings and Algebras · Mathematics 2022-09-26 Murray Bremner , Vladimir Dotsenko

This paper explicitely constructs cofree coalgebras over operads in the category of DG-modules. Special cases are considered in which the general expression simplifies (such as the pointed, irreducible case). It is shown that the existence…

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

Operads are algebraic devices offering a formalization of the concept of operations with several inputs and one output. Such operations can be naturally composed to form bigger and more complex ones. Coming historically from algebraic…

Combinatorics · Mathematics 2021-04-27 Samuele Giraudo

From the `cofree' cooperad $T'(A[-1])$ on a collection $A$ together with a differential, we construct an $L_\infty$-algebra structure on the total space $\bigoplus_nA(n)$ that descends to coinvariants. We use this construction to define an…

Quantum Algebra · Mathematics 2007-05-23 Pepijn P. I. van der Laan

We develop deformation theory of algebras over quadratic operads where the parameter space is a commutative local algebra. We also give a construction of a distinguised deformation of an algebra over a quadratic operad with a complete local…

K-Theory and Homology · Mathematics 2013-11-08 Alice Fialowski , Goutam Mukherjee , Anita Naolekar

An operad describes a category of algebras and a (co)homology theory for these algebras may be formulated using the homological algebra of operads. A morphism of operads $f:\mathcal{O}\rightarrow\mathcal{P}$ describes a functor allowing a…

Rings and Algebras · Mathematics 2014-03-20 James Griffin

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

The operad of moulds is realized in terms of an operational calculus of formal integrals (continuous formal power series). This leads to many simplifications and to the discovery of various suboperads. In particular, we prove a conjecture…

Quantum Algebra · Mathematics 2007-10-18 Frédéric Chapoton , Florent Hivert , Jean-Christophe Novelli , Jean-Yves Thibon

We introduce a new algebraic construction, {\em monop}, that combines monoids (with respect to the product of species), and operads (monoids with respect to the substitution of species) in the same algebraic structure. By the use of…

Combinatorics · Mathematics 2017-07-04 Miguel Méndez , Rafael Sánchez

Hom-quadri dendriform algebras and Hom-six-dendriform agebras are introduced and studied which is a splitting of a Hom-diassociative and Hom-triassociative algebras, respectively. Moreover we explore the connections be tween these…

Rings and Algebras · Mathematics 2026-01-12 Abdelkader Hamdouni , Imed Basdouri , Mariem Jendoubi , Ahmed Zahari Abdou Damdji

We extend the construction of 2D superintegrable Hamiltonians with separation of variables in spherical coordinates using combinations of shift, ladder, and supercharge operators to models involving rational extensions of the two-parameter…

Mathematical Physics · Physics 2015-08-04 Ian Marquette , Christiane Quesne

The main goal of this paper is to introduce a framework for infinitesimal deformation problems, using new methods coming from operadic calculus. We construct an adjunction between infinitesimal deformation problems over some type of…

Algebraic Topology · Mathematics 2024-05-31 Brice Le Grignou , Victor Roca i Lucio

Operads were originally defined by May to have right actions of the symmetric groups, but later formulations have also used no groups actions at all or group actions by such families as the braid groups. We call such families action…

Category Theory · Mathematics 2026-03-23 Alexander Corner , Nick Gurski

The polynomial algebra is a deformed SU(2) algebra. Here, we use polynomial algebra as a method to solve a series of deformed oscillators. Meanwhile, we find a series of physics systems corresponding with polynomial algebra with different…

Mathematical Physics · Physics 2015-05-14 Ci Song , Fu-Lin Zhang , Jing-Ling Chen

This paper gives a systematic study of matching dialgebras corresponding to the operad $As^{(2)}$ in \cite{Zi} as the only Koszul self dual operad there other than the operads of associative algebras and Poisson algebras. The close…

Category Theory · Mathematics 2014-07-22 Yong Zhang , Chengming Bai , Li Guo

This paper studies the homotopy theory of algebras and homotopy algebras over an operad. It provides an exhaustive description of their higher homotopical properties using the more general notion of morphisms called infinity-morphisms. The…

Algebraic Topology · Mathematics 2016-02-09 Bruno Vallette