The Schröder-Bernstein theorem for numbers states that if
then For Sets, the theorem states that if there are Injections of the Set
into the Set and of into , then there is a Bijective correspondence between and
(i.e., they are Equipollent).
See also Bijection, Equipollent, Injection
© 1996-9 Eric W. Weisstein
1999-05-26