what are bijective injective and surjective functions?
Injective, Surjective and Bijective. "Injective, Surjective and Bijective" tells us about how a function behaves. ... Surjective means that every "B" has at least one matching "A" (maybe more than one). There won't be a "B" left out. Bijective means both Injective and Surjective together.