A={1,2,3,4,5}

f :P(A)→P(A), f (X ) =A\X.

how can i prove that this function is Surjective???

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- December 13th 2008, 11:36 AMtukilalaSurjective prove
A={1,2,3,4,5}

f :P(A)→P(A), f (X ) =A\X.

how can i prove that this function is Surjective??? - December 13th 2008, 12:02 PMPlato
Suppose that .

Now note that:

. - December 13th 2008, 12:17 PMtukilalacan u explain me please
why u did

A/A/M

???

why not A/ just ones? why twice?