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Mirrors > Home > ILE Home > Th. List > 2ralunsn | Unicode version |
Description: Double restricted quantification over the union of a set and a singleton, using implicit substitution. (Contributed by Paul Chapman, 17-Nov-2012.) |
Ref | Expression |
---|---|
2ralunsn.1 |
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2ralunsn.2 |
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2ralunsn.3 |
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Ref | Expression |
---|---|
2ralunsn |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2ralunsn.2 |
. . . 4
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2 | 1 | ralunsn 3597 |
. . 3
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3 | 2 | ralbidv 2369 |
. 2
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4 | 2ralunsn.1 |
. . . . . 6
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5 | 4 | ralbidv 2369 |
. . . . 5
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6 | 2ralunsn.3 |
. . . . 5
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7 | 5, 6 | anbi12d 457 |
. . . 4
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8 | 7 | ralunsn 3597 |
. . 3
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9 | r19.26 2486 |
. . . 4
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10 | 9 | anbi1i 446 |
. . 3
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11 | 8, 10 | syl6bb 194 |
. 2
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12 | 3, 11 | bitrd 186 |
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 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2064 |
This theorem depends on definitions: df-bi 115 df-3an 922 df-tru 1288 df-nf 1391 df-sb 1687 df-clab 2069 df-cleq 2075 df-clel 2078 df-nfc 2209 df-ral 2354 df-v 2604 df-sbc 2817 df-un 2978 df-sn 3412 |
This theorem is referenced by: (None) |
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