Jukkrid Nuntasri
(จุฬาลงกรณ์มหาวิทยาลัย, 2019)
In the Zermelo-Frankel set theory (ZF) with the Axiom of Choice (AC), the set of subsets of X, P(X), and the set of permutations on X, S(X), have the same cardinality for any imfinite set X. Dawson and Howard showed that ...