The Law of Infinite Cardinal Addition is Weaker than the Axiom of Choice

Autor:	Halpern, J. D., Howard, Paul E.
Zdroj:	Transactions of the American Mathematical Society, 1976 Jun 01. 220, 195-204.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/1997641 Zobrazit plný text záznamu