On the number of countable subdirect powers of unary algebras
Rings and Algebras
2023-07-11 v3
Abstract
A finite unary algebra has only countably many countable subdirect powers if and only if every operation is either a permutation or a constant mapping.
Cite
@article{arxiv.2106.08876,
title = {On the number of countable subdirect powers of unary algebras},
author = {Nik Ruskuc and Bill de Witt},
journal= {arXiv preprint arXiv:2106.08876},
year = {2023}
}