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?
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?
All proofs depend upon the definitions and axioms one has to work with.
Usually in this case, show that there is an injection