English

Nonassociative right hoops

Rings and Algebras 2021-01-19 v1 Logic

Abstract

The class of nonassociative right hoops, or narhoops for short, is defined as a subclass of right-residuated magmas, and is shown to be a variety. These algebras generalize both right quasigroups and right hoops, and we characterize the subvarieties in which the operation xy=(x/y)yx\sqcap y=(x / y)y is associative and/or commutative. Narhoops with a left unit are proved to have a top element if and only if \sqcap is commutative, and their congruences are determined by the equivalence class of the left unit. We also show that the four identities defining narhoops are independent.

Cite

@article{arxiv.1810.06785,
  title  = {Nonassociative right hoops},
  author = {Peter Jipsen and Michael Kinyon},
  journal= {arXiv preprint arXiv:1810.06785},
  year   = {2021}
}
R2 v1 2026-06-23T04:41:05.371Z