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Mirrors > Home > ILE Home > Th. List > exintr | Unicode version |
Description: Introduce a conjunct in the scope of an existential quantifier. (Contributed by NM, 11-Aug-1993.) |
Ref | Expression |
---|---|
exintr |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exintrbi 1633 |
. 2
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2 | 1 | biimpd 144 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1447 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-4 1510 ax-ial 1534 |
This theorem depends on definitions: df-bi 117 |
This theorem is referenced by: ceqsex 2775 r19.2m 3509 r19.2mOLD 3510 |
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