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Mirrors > Home > ILE Home > Th. List > rexpr | Unicode version |
Description: Convert an existential quantification over a pair to a disjunction. (Contributed by NM, 3-Jun-2007.) (Revised by Mario Carneiro, 23-Apr-2015.) |
Ref | Expression |
---|---|
ralpr.1 | |
ralpr.2 | |
ralpr.3 | |
ralpr.4 |
Ref | Expression |
---|---|
rexpr |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ralpr.1 | . 2 | |
2 | ralpr.2 | . 2 | |
3 | ralpr.3 | . . 3 | |
4 | ralpr.4 | . . 3 | |
5 | 3, 4 | rexprg 3575 | . 2 |
6 | 1, 2, 5 | mp2an 422 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 wo 697 wceq 1331 wcel 1480 wrex 2417 cvv 2686 cpr 3528 |
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-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-rex 2422 df-v 2688 df-sbc 2910 df-un 3075 df-sn 3533 df-pr 3534 |
This theorem is referenced by: (None) |
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