The principle that "any product of cofinite topologies is compact" is equivalent (without appealing to the Axiom of Choice) to the Boolean Prime Ideal Theorem.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-fm189-3-5,
author = {Eric Schechter},
title = {Kelley's specialization of Tychonoff's Theorem is equivalent to the Boolean Prime Ideal Theorem},
journal = {Fundamenta Mathematicae},
volume = {189},
year = {2006},
pages = {285-288},
zbl = {1105.03044},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm189-3-5}
}
Eric Schechter. Kelley's specialization of Tychonoff's Theorem is equivalent to the Boolean Prime Ideal Theorem. Fundamenta Mathematicae, Tome 189 (2006) pp. 285-288. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm189-3-5/