Posted by **noman** on Monday, October 4, 2010 at 4:46pm.

Let f and g be functions between A and B. Prove that f = g if and only if dom f = dom g and for every x in dom f, f(x) = g(x).

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March 24, 2017
Posted by **noman** on Monday, October 4, 2010 at 4:46pm.

Let f and g be functions between A and B. Prove that f = g if and only if dom f = dom g and for every x in dom f, f(x) = g(x).

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