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Mirrors > Home > ILE Home > Th. List > rexbid2 | Unicode version |
Description: Formula-building rule for restricted existential quantifier (deduction form). (Contributed by BJ, 14-Jul-2024.) |
Ref | Expression |
---|---|
rexbid2.nf | |
rexbid2.1 |
Ref | Expression |
---|---|
rexbid2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rexbid2.nf | . . 3 | |
2 | rexbid2.1 | . . 3 | |
3 | 1, 2 | exbid 1603 | . 2 |
4 | df-rex 2448 | . 2 | |
5 | df-rex 2448 | . 2 | |
6 | 3, 4, 5 | 3bitr4g 222 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wnf 1447 wex 1479 wcel 2135 wrex 2443 |
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-5 1434 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-4 1497 ax-ial 1521 |
This theorem depends on definitions: df-bi 116 df-nf 1448 df-rex 2448 |
This theorem is referenced by: (None) |
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