i is a bijection function from X-->X
f inverse(f(x)) = x
Last edited by doresa; Jul 19th 2009 at 07:23 AM.
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If is an injective function, then the inverse is defined by for all
Since bijective implies injective, the result follows immediately.
Last edited by AlephZero; Jul 18th 2009 at 06:34 PM.
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