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Mirrors > Home > ILE Home > Th. List > mobidv | Unicode version |
Description: Formula-building rule for "at most one" quantifier (deduction rule). (Contributed by Mario Carneiro, 7-Oct-2016.) |
Ref | Expression |
---|---|
mobidv.1 |
Ref | Expression |
---|---|
mobidv |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfv 1421 | . 2 | |
2 | mobidv.1 | . 2 | |
3 | 1, 2 | mobid 1935 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 98 wmo 1901 |
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-ie1 1382 ax-ie2 1383 ax-4 1400 ax-17 1419 ax-ial 1427 |
This theorem depends on definitions: df-bi 110 df-nf 1350 df-eu 1903 df-mo 1904 |
This theorem is referenced by: mobii 1937 mosubopt 4405 dffun6f 4915 funmo 4917 1stconst 5842 2ndconst 5843 |
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