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Mirrors > Home > ILE Home > Th. List > exintrbi | Unicode version |
Description: Add/remove a conjunct in the scope of an existential quantifier. (Contributed by Raph Levien, 3-Jul-2006.) |
Ref | Expression |
---|---|
exintrbi |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pm4.71 387 | . . 3 | |
2 | 1 | albii 1457 | . 2 |
3 | exbi 1591 | . 2 | |
4 | 2, 3 | sylbi 120 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wal 1340 wex 1479 |
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 |
This theorem is referenced by: exintr 1621 |
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