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Mirrors > Home > ILE Home > Th. List > nfsbc | Unicode version |
Description: Bound-variable hypothesis builder for class substitution. (Contributed by NM, 7-Sep-2014.) (Revised by Mario Carneiro, 12-Oct-2016.) |
Ref | Expression |
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nfsbc.1 |
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nfsbc.2 |
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Ref | Expression |
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nfsbc |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nftru 1443 |
. . 3
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2 | nfsbc.1 |
. . . 4
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3 | 2 | a1i 9 |
. . 3
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4 | nfsbc.2 |
. . . 4
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5 | 4 | a1i 9 |
. . 3
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6 | 1, 3, 5 | nfsbcd 2932 |
. 2
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7 | 6 | mptru 1341 |
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 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-sbc 2914 |
This theorem is referenced by: cbvralcsf 3067 cbvrexcsf 3068 opelopabf 4204 ralrnmpt 5570 rexrnmpt 5571 dfopab2 6095 dfoprab3s 6096 mpoxopoveq 6145 |
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