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Reference: http://en.wikipedia.org/wiki/Bijection,_injection_and_surjection
Consider the two sets X & Y connected by a the relation y^2=x^2. (For simplicity we can take X={-2,2} and Y={-2,2}).Then can we call the mapping from X to Y to be surjective?
From the definition of WIKI, the answer appears to be 'yes'.
Consider the two sets X & Y connected by a the relation y^2=x^2. (For simplicity we can take X={-2,2} and Y={-2,2}).Then can we call the mapping from X to Y to be surjective?
From the definition of WIKI, the answer appears to be 'yes'.