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Mirrors > Home > ILE Home > Th. List > Mathboxes > strcoll2 | Unicode version |
Description: Version of ax-strcoll 10777 with one DV condition removed and without initial universal quantifier. (Contributed by BJ, 5-Oct-2019.) |
Ref | Expression |
---|---|
strcoll2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | raleq 2549 |
. . 3
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2 | rexeq 2550 |
. . . . . 6
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3 | 2 | bibi2d 230 |
. . . . 5
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4 | 3 | albidv 1745 |
. . . 4
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5 | 4 | exbidv 1746 |
. . 3
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6 | 1, 5 | imbi12d 232 |
. 2
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7 | ax-strcoll 10777 |
. . 3
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8 | 7 | spi 1469 |
. 2
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9 | 6, 8 | chvarv 1853 |
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 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-strcoll 10777 |
This theorem depends on definitions: df-bi 115 df-tru 1287 df-nf 1390 df-sb 1686 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ral 2353 df-rex 2354 |
This theorem is referenced by: strcollnft 10779 strcollnfALT 10781 |
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