English

Combinatorial operads from monoids

Combinatorics 2015-02-10 v2 Quantum Algebra

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

R2 v1 2026-06-22T00:42:36.451Z