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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 1506 | . 2 |
3 | 2 | mo3h 2066 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wal 1340 wnf 1447 wsb 1749 wmo 2014 |
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 699 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 |
This theorem depends on definitions: df-bi 116 df-nf 1448 df-sb 1750 df-eu 2016 df-mo 2017 |
This theorem is referenced by: sbmo 2072 rmo3f 2918 rmo3 3037 isarep2 5269 |
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