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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 4998 | . 2 | |
2 | fndm 4998 | . 2 | |
3 | 1, 2 | sylan9req 2093 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 97 wceq 1243 cdm 4345 wfn 4897 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-5 1336 ax-gen 1338 ax-4 1400 ax-17 1419 ax-ext 2022 |
This theorem depends on definitions: df-bi 110 df-cleq 2033 df-fn 4905 |
This theorem is referenced by: fodmrnu 5114 tfrlemisucaccv 5939 0fz1 8909 |
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