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Mirrors > Home > ILE Home > Th. List > mo3 | Unicode version |
Description: Alternate definition of "at most one". Definition of [BellMachover] p. 460, except that definition has the side condition that not occur in in place of our hypothesis. (Contributed by NM, 8-Mar-1995.) |
Ref | Expression |
---|---|
mo3.1 |
Ref | Expression |
---|---|
mo3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mo3.1 | . . 3 | |
2 | 1 | nfri 1513 | . 2 |
3 | 2 | mo3h 2073 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wal 1347 wnf 1454 wsb 1756 wmo 2021 |
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-io 705 ax-5 1441 ax-7 1442 ax-gen 1443 ax-ie1 1487 ax-ie2 1488 ax-8 1498 ax-10 1499 ax-11 1500 ax-i12 1501 ax-bndl 1503 ax-4 1504 ax-17 1520 ax-i9 1524 ax-ial 1528 ax-i5r 1529 |
This theorem depends on definitions: df-bi 116 df-nf 1455 df-sb 1757 df-eu 2023 df-mo 2024 |
This theorem is referenced by: sbmo 2079 rmo3f 2928 rmo3 3047 isarep2 5287 |
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