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The aim of this paper is to present remarkable classes of Lie-admissible algebras containing in particular the associative algebras, the Vinberg algebras and pre-Lie algebras. We determine the associated quadratic operads and their dual…

Rings and Algebras · Mathematics 2007-05-23 E. Remm

We define a monoidal semantics for algebraic theories. The basis for the definition is provided by the analysis of the structural rules in the term calculus of algebraic languages. Models are described both explicitly, in a form that…

Logic · Mathematics 2017-05-26 Luca Mauri

We introduce a generalization of the notion of operad that we call a contractad, whose set of operations is indexed by connected graphs and whose composition rules are numbered by contractions of connected subgraphs. We show that many…

Algebraic Topology · Mathematics 2024-07-24 Denis Lyskov

We describe a type of Lie color algebra, which we call generic, whose universal enveloping algebra is a domain with finite global dimension. Moreover, it is an iterated Ore extension. We provide an application and show Grobner basis methods…

Representation Theory · Mathematics 2007-05-23 Kenneth L. Price

In this paper we develop the theory of operads, algebras and modules in cofibrantly generated symmetric monoidal model categories. We give J-semi model strucures, which are a slightly weaker version of model structures, for operads and…

Algebraic Topology · Mathematics 2007-05-23 Markus Spitzweck

Using the Gr\"obner basis of an ideal generated by a family of polynomials we prove that every planar graph is 4-colorable. Here we also use the fact that the complete graph of 5 vertices is not included in any planar graph.

General Mathematics · Mathematics 2012-06-11 Dang Vu Giang

We investigate algebras with one operation. We study when these algebras form a monoidal category and analyze Koszulness and cyclicity of the corresponding operads. We also introduce a new kind of symmetry for operads, the dihedrality,…

Algebraic Topology · Mathematics 2007-05-23 Martin Markl , Elisabeth Remm

The goal of the paper is to establish and to investigate a fully faithful embedding of the category of group operads into that of crossed interval groups. For this, we introduce a monoidal structure on the slice of the category of operads…

Category Theory · Mathematics 2018-06-11 Jun Yoshida

Clones are specializations of operads forming powerful instruments to describe varieties of algebras wherein repeating variables are allowed in their equations. They allow us in this way to realize and study a large range of algebraic…

Combinatorics · Mathematics 2026-04-08 Samuele Giraudo

We argue that operads provide a general framework for dealing with polynomials and combinatory completeness of combinatory algebras, including the classical $\mathbf{SK}$-algebras, linear $\mathbf{BCI}$-algebras, planar…

Logic in Computer Science · Computer Science 2023-06-22 Masahito Hasegawa

We consider colored operads and their actions on categories. As a special example we construct a cobordism category with a colored operad action arising from oriented planar arc diagrams. This is used to construct an invariant of oriented…

Geometric Topology · Mathematics 2019-03-18 Gisa Schäfer , Yasuyoshi Yonezawa

Using a binary representation for basis elements of an algebra combined with a framework of multiplier and index functions, a connection has been established between the structure of a large class of algebras and the XOR componentwise…

Mathematical Physics · Physics 2025-09-30 Derek Courchesne , Sébastien Tremblay

We revisit a well-known family of polynomial ideals encoding the problem of graph-$k$-colorability. Our paper describes how the inherent combinatorial structure of the ideals implies several interesting algebraic properties. Specifically,…

Symbolic Computation · Computer Science 2014-10-28 Jesús A. De Loera , Susan Margulies , Michael Pernpeintner , Eric Riedl , David Rolnick , Gwen Spencer , Despina Stasi , Jon Swenson

We generalize the construction of multitildes in the aim to provide multitilde operators for regular languages. We show that the underliying algebraic structure involves the action of some operads. An operad is an algebraic structure that…

Formal Languages and Automata Theory · Computer Science 2016-01-22 Samuele Giraudo , Jean-Gabriel Luque , Ludovic Mignot , Florent Nicart

This paper investigates algebraic objects equipped with an operator, such as operated monoids, operated algebras etc. Various free object functors in these operated contexts are explicitly constructed. For operated algebras whose operator…

Rings and Algebras · Mathematics 2021-08-12 Zihao Qi , Yufei Qin , Kai Wang , Guodong Zhou

We give sufficient conditions for homotopical localization functors to preserve algebras over coloured operads in monoidal model categories. Our approach encompasses a number of previous results about preservation of structures under…

Algebraic Topology · Mathematics 2014-02-26 Carles Casacuberta , Javier J. Gutierrez , Ieke Moerdijk , Rainer M. Vogt

The purpose of this paper is to give a characterisation of divided power algebras over a reduced operad. Such a characterisation is given in terms of polynomial operations, following the classical example of divided power algebras. We…

Algebraic Topology · Mathematics 2020-08-12 Sacha Ikonicoff

This survey provides an elementary introduction to operads and to their applications in homotopical algebra. The aim is to explain how the notion of an operad was prompted by the necessity to have an algebraic object which encodes higher…

Algebraic Topology · Mathematics 2012-02-16 Bruno Vallette

In this paper Hom-Lie algebras, Lie color algebras, Lie superalgebras and other type of generalized Lie algebras are recovered by means of an iterated construction, known as monadic decomposition of functors, which is based on…

Category Theory · Mathematics 2014-01-10 Alessandro Ardizzoni , Claudia Menini

We introduce an explicit combinatorial characterization of the minimal model ${\cal O}_{\infty}$ of the coloured operad ${\cal O}$ encoding non-symmetric operads. In our description of ${\cal O}_{\infty}$, the spaces of operations are…

Algebraic Topology · Mathematics 2019-11-26 Jovana Obradović