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Mirrors > Home > ILE Home > Th. List > nrexrmo | Unicode version |
Description: Nonexistence implies restricted "at most one". (Contributed by NM, 17-Jun-2017.) |
Ref | Expression |
---|---|
nrexrmo |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm2.21 547 | . 2 | |
2 | rmo5 2525 | . 2 | |
3 | 1, 2 | sylibr 137 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wi 4 wrex 2307 wreu 2308 wrmo 2309 |
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-in2 545 |
This theorem depends on definitions: df-bi 110 df-mo 1904 df-rex 2312 df-reu 2313 df-rmo 2314 |
This theorem is referenced by: (None) |
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