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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 3671 |
. . 3
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3 | 2 | ralbidv 2396 |
. 2
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4 | 2ralunsn.1 |
. . . . . 6
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5 | 4 | ralbidv 2396 |
. . . . 5
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6 | 2ralunsn.3 |
. . . . 5
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7 | 5, 6 | anbi12d 460 |
. . . 4
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8 | 7 | ralunsn 3671 |
. . 3
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9 | r19.26 2517 |
. . . 4
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10 | 9 | anbi1i 449 |
. . 3
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11 | 8, 10 | syl6bb 195 |
. 2
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12 | 3, 11 | bitrd 187 |
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 671 ax-5 1391 ax-7 1392 ax-gen 1393 ax-ie1 1437 ax-ie2 1438 ax-8 1450 ax-10 1451 ax-11 1452 ax-i12 1453 ax-bndl 1454 ax-4 1455 ax-17 1474 ax-i9 1478 ax-ial 1482 ax-i5r 1483 ax-ext 2082 |
This theorem depends on definitions: df-bi 116 df-3an 932 df-tru 1302 df-nf 1405 df-sb 1704 df-clab 2087 df-cleq 2093 df-clel 2096 df-nfc 2229 df-ral 2380 df-v 2643 df-sbc 2863 df-un 3025 df-sn 3480 |
This theorem is referenced by: (None) |
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