Combinatorial operads from monoids
Abstract
We introduce a functorial construction which, from a monoid, produces a set-operad. We obtain new (symmetric or not) operads as suboperads or quotients of the operads obtained from usual monoids such as the additive and multiplicative monoids of integers and cyclic monoids. They involve various familiar combinatorial objects: endofunctions, parking functions, packed words, permutations, planar rooted trees, trees with a fixed arity, Schr\"oder trees, Motzkin words, integer compositions, directed animals, and segmented integer compositions. We also recover some already known (symmetric or not) operads: the magmatic operad, the associative commutative operad, the diassociative operad, and the triassociative operad. We provide presentations by generators and relations of all constructed nonsymmetric operads.
Keywords
Cite
@article{arxiv.1306.6938,
title = {Combinatorial operads from monoids},
author = {Samuele Giraudo},
journal= {arXiv preprint arXiv:1306.6938},
year = {2015}
}
Comments
42 pages. Complete version of the extended abstracts arXiv:1208.0920 and arXiv:1208.0922