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Outline of discrete mathematics
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===Functions=== * {{annotated link|Function (mathematics)|Function}} * {{annotated link|Domain of a function}} * {{annotated link|Codomain}} * {{annotated link|Range of a function}} * {{annotated link|Image (mathematics)}} * {{annotated link|Injective function}} * {{annotated link|Surjection}} * {{annotated link|Bijection}} * {{annotated link|Function composition}} * {{annotated link|Partial function}} * {{annotated link|Multivalued function}} * {{annotated link|Binary function}} * {{annotated link|Floor function}} * {{annotated link|Sign function}} * {{annotated link|Inclusion map}} * {{annotated link|Pigeonhole principle}} * {{annotated link|Relation composition}} * {{annotated link|Permutations}} * {{annotated link|Symmetry}}
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