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Mirrors > Home > ILE Home > Th. List > f1orel | Unicode version |
Description: A one-to-one onto mapping is a relation. (Contributed by NM, 13-Dec-2003.) |
Ref | Expression |
---|---|
f1orel |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1ofun 5369 | . 2 | |
2 | funrel 5140 | . 2 | |
3 | 1, 2 | syl 14 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wrel 4544 wfun 5117 wf1o 5122 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 |
This theorem depends on definitions: df-bi 116 df-fun 5125 df-fn 5126 df-f 5127 df-f1 5128 df-f1o 5130 |
This theorem is referenced by: f1ococnv1 5396 isores1 5715 ssenen 6745 dif1en 6773 |
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