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n. Given a pair of morphisms and with a common domain, Z, their pushout is a pair of morphisms and as well as their common codomain, P, such that the equation is satisfied, and for which there is the universal property that for any other object Q for which there are also morphisms and ; there is a unique morphism such that and .

"Fifty years later, education reform has failed to close the achievement gap or reduce the pushout rate."

pullback   

Pushtu    pullout