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Mirrors > Home > ILE Home > Th. List > sbcal | Unicode version |
Description: Move universal quantifier in and out of class substitution. (Contributed by NM, 31-Dec-2016.) |
Ref | Expression |
---|---|
sbcal |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sbcex 2886 |
. 2
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2 | sbcex 2886 |
. . 3
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3 | 2 | sps 1500 |
. 2
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4 | dfsbcq2 2881 |
. . 3
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5 | dfsbcq2 2881 |
. . . 4
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6 | 5 | albidv 1778 |
. . 3
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7 | sbal 1951 |
. . 3
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8 | 4, 6, 7 | vtoclbg 2718 |
. 2
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9 | 1, 3, 8 | pm5.21nii 676 |
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 105 ax-ia2 106 ax-ia3 107 ax-io 681 ax-5 1406 ax-7 1407 ax-gen 1408 ax-ie1 1452 ax-ie2 1453 ax-8 1465 ax-10 1466 ax-11 1467 ax-i12 1468 ax-bndl 1469 ax-4 1470 ax-17 1489 ax-i9 1493 ax-ial 1497 ax-i5r 1498 ax-ext 2097 |
This theorem depends on definitions: df-bi 116 df-tru 1317 df-nf 1420 df-sb 1719 df-clab 2102 df-cleq 2108 df-clel 2111 df-nfc 2244 df-v 2659 df-sbc 2879 |
This theorem is referenced by: sbcfung 5105 |
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