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Mirrors > Home > ILE Home > Th. List > 3exbii | Unicode version |
Description: Inference adding 3 existential quantifiers to both sides of an equivalence. (Contributed by NM, 2-May-1995.) |
Ref | Expression |
---|---|
exbii.1 |
Ref | Expression |
---|---|
3exbii |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exbii.1 | . . 3 | |
2 | 1 | exbii 1598 | . 2 |
3 | 2 | 2exbii 1599 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wex 1485 |
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 1440 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-4 1503 ax-ial 1527 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: eeeanv 1926 ceqsex6v 2774 oprabid 5882 dfoprab2 5897 dftpos3 6238 xpassen 6804 |
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