The axiom of choice for countable collections of countable sets does not imply the countable union theorem.
Howard, Paul E.
Notre Dame J. Formal Logic, Tome 33 (1992) no. 3, p. 236-243 / Harvested from Project Euclid
Publié le : 1992-03-14
Classification:  03E25,  04A25
@article{1093636102,
     author = {Howard, Paul E.},
     title = {The axiom of choice for countable collections of countable sets does not imply the countable union theorem.},
     journal = {Notre Dame J. Formal Logic},
     volume = {33},
     number = {3},
     year = {1992},
     pages = { 236-243},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1093636102}
}
Howard, Paul E. The axiom of choice for countable collections of countable sets does not imply the countable union theorem.. Notre Dame J. Formal Logic, Tome 33 (1992) no. 3, pp.  236-243. http://gdmltest.u-ga.fr/item/1093636102/