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Mirrors > Home > ILE Home > Th. List > exanaliim | Unicode version |
Description: A transformation of quantifiers and logical connectives. In classical logic the converse also holds. (Contributed by Jim Kingdon, 15-Jul-2018.) |
Ref | Expression |
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exanaliim |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | annimim 686 |
. . 3
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2 | 1 | eximi 1600 |
. 2
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3 | exnalim 1646 |
. 2
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4 | 2, 3 | syl 14 |
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-in1 614 ax-in2 615 ax-5 1447 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-4 1510 ax-17 1526 ax-ial 1534 |
This theorem depends on definitions: df-bi 117 df-tru 1356 df-fal 1359 df-nf 1461 |
This theorem is referenced by: rexnalim 2466 nssr 3215 nssssr 4222 brprcneu 5508 |
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