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Mirrors > Home > ILE Home > Th. List > exbid | Unicode version |
Description: Formula-building rule for existential quantifier (deduction rule). (Contributed by Mario Carneiro, 24-Sep-2016.) |
Ref | Expression |
---|---|
exbid.1 | |
exbid.2 |
Ref | Expression |
---|---|
exbid |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exbid.1 | . . 3 | |
2 | 1 | nfri 1452 | . 2 |
3 | exbid.2 | . 2 | |
4 | 2, 3 | exbidh 1545 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 103 wnf 1389 wex 1421 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-4 1440 ax-ial 1467 |
This theorem depends on definitions: df-bi 115 df-nf 1390 |
This theorem is referenced by: mobid 1976 rexbida 2363 rexeqf 2546 opabbid 3843 repizf2 3936 oprabbid 5578 sscoll2 10783 |
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