show that if A and B are sets, A is uncountable, and A is a subset of B, then B is uncountable

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- Oct 29th 2008, 12:43 PMpila0688sets
show that if A and B are sets, A is uncountable, and A is a subset of B, then B is uncountable

- Oct 29th 2008, 01:08 PMPlato
What does it mean to be uncountable?

Can you extend a function from A to all of B?

Have you proved that every subset of a countable set is countable?