15. October 2015 bijection surjection: ∀b in B, ∃a in A s.t. b = f(a) injection: ∀a1, a2 in A, a1 ≠ a2 ⇒ f(a1) ≠ f(a2) bijection: surjection + injection tagPlaceholderTags: math Write a comment Comments: 0
Write a comment