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Mirrors > Home > ILE Home > Th. List > fndmu | Unicode version |
Description: A function has a unique domain. (Contributed by NM, 11-Aug-1994.) |
Ref | Expression |
---|---|
fndmu |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fndm 5192 | . 2 | |
2 | fndm 5192 | . 2 | |
3 | 1, 2 | sylan9req 2171 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1316 cdm 4509 wfn 5088 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1408 ax-gen 1410 ax-4 1472 ax-17 1491 ax-ext 2099 |
This theorem depends on definitions: df-bi 116 df-cleq 2110 df-fn 5096 |
This theorem is referenced by: fodmrnu 5323 tfrlemisucaccv 6190 tfr1onlemsucaccv 6206 tfrcllemsucaccv 6219 0fz1 9793 |
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