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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 1613 |
. 2
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2 | 1 | biimpd 143 |
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 105 ax-ia2 106 ax-ia3 107 ax-5 1424 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-4 1488 ax-ial 1515 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: ceqsex 2727 r19.2m 3454 r19.2mOLD 3455 |
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