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Mirrors > Home > ILE Home > Th. List > ralcomf | Unicode version |
Description: Commutation of restricted quantifiers. (Contributed by Mario Carneiro, 14-Oct-2016.) |
Ref | Expression |
---|---|
ralcomf.1 |
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ralcomf.2 |
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Ref | Expression |
---|---|
ralcomf |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ancomsimp 1374 |
. . . 4
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2 | 1 | 2albii 1405 |
. . 3
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3 | alcom 1412 |
. . 3
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4 | 2, 3 | bitri 182 |
. 2
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5 | ralcomf.1 |
. . 3
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6 | 5 | r2alf 2395 |
. 2
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7 | ralcomf.2 |
. . 3
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8 | 7 | r2alf 2395 |
. 2
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9 | 4, 6, 8 | 3bitr4i 210 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 665 ax-5 1381 ax-7 1382 ax-gen 1383 ax-ie1 1427 ax-ie2 1428 ax-8 1440 ax-10 1441 ax-11 1442 ax-i12 1443 ax-bndl 1444 ax-4 1445 ax-17 1464 ax-i9 1468 ax-ial 1472 ax-i5r 1473 ax-ext 2070 |
This theorem depends on definitions: df-bi 115 df-nf 1395 df-sb 1693 df-cleq 2081 df-clel 2084 df-nfc 2217 df-ral 2364 |
This theorem is referenced by: ralcom 2530 ssiinf 3779 |
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