If then where denotes here that the set A is less than or equinumerous with the set B.

How to do this? From the hypothesis we know that every element of A belongs to B so A cannot have more elements than B right? or do I understand it wrong?

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- May 13th 2013, 04:56 AMraymancardinality of sets
If then where denotes here that the set A is less than or equinumerous with the set B.

How to do this? From the hypothesis we know that every element of A belongs to B so A cannot have more elements than B right? or do I understand it wrong? - May 13th 2013, 05:05 AMPlatoRe: cardinality of sets
- May 13th 2013, 05:30 AMraymanRe: cardinality of sets
yes of course! I totally forgot about the trivial inclusion map:) thanks