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Jan Meyer
2026-02-27 11:26:12 +01:00
parent 3a25dd842c
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DAS/Functions.md
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@@ -24,4 +24,5 @@ A function is _surjective_ if every element $y in Y$ has _at minimum_ one matchi
- $forall y in Y, exists x in X : f(x) = y$
### Bijectivity
A function is _bijective_ if every element $y in Y$ has _exactly_ one matching $x in X$ (it is _injective_ and _surjective_)
A function is _bijective_ if every element $y in Y$ has _exactly_ one matching $x in X$ (it is _injective_ and _surjective_)
- $forall y in Y, exists excl x in X : f(x) = y$