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Mirrors > Home > ILE Home > Th. List > 2rexbii | Unicode version |
Description: Inference adding two restricted existential quantifiers to both sides of an equivalence. (Contributed by NM, 11-Nov-1995.) |
Ref | Expression |
---|---|
ralbii.1 |
Ref | Expression |
---|---|
2rexbii |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralbii.1 | . . 3 | |
2 | 1 | rexbii 2442 | . 2 |
3 | 2 | rexbii 2442 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wrex 2417 |
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 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-4 1487 ax-17 1506 ax-ial 1514 |
This theorem depends on definitions: df-bi 116 df-tru 1334 df-nf 1437 df-rex 2422 |
This theorem is referenced by: 3reeanv 2601 4fvwrd4 9917 prodmodc 11347 |
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