hello i want to know why the codomain of the function "cardinality" is ,i don't see why we need . i'm confused,if is an empty set : we have am i correct ? thanks for helping me
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Originally Posted by Raoh i want to know why the codomain of the function "cardinality" is ,i don't see why we need . i'm confused,if is an empty set : we have am i correct ? I really have no idea how to read this question. What do you mean by "codomain of the function cardinality"? The cardinality of the empty is But the cardinality of its power set . Does that help?
thanks a lot,but i read it in a book
and i meant by the codomain,the target domain. thanks a lot
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