Cyclic structures for simplicial objects from comonads
Abstract
The simplicial endofunctor induced by a comonad in some category may underly a cyclic object in its category of endofunctors. The cyclic symmetry is then given by a sequence of natural transformations. We write down the commutation relations the first cyclic operator has to satisfy with the data of the comonad. If we add a version of quantum Yang Baxter relation and another relation we actually get a sufficient condition for constructing a sequence of higher cyclic operators in a canonical fashion. A degenerate case of this construction comes from so-called trivial symmetry of an additive comonad. We also consider weaker versions for paracyclic objects as well as some connections to the subject of distributive laws.
Cite
@article{arxiv.math/0412001,
title = {Cyclic structures for simplicial objects from comonads},
author = {Zoran Skoda},
journal= {arXiv preprint arXiv:math/0412001},
year = {2007}
}
Comments
18 pages; preliminary version