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Mirrors > Home > ILE Home > Th. List > oprcl | Unicode version |
Description: If an ordered pair has an element, then its arguments are sets. (Contributed by Mario Carneiro, 26-Apr-2015.) |
Ref | Expression |
---|---|
oprcl |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elex2 2673 |
. 2
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2 | df-op 3502 |
. . . . . . 7
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3 | 2 | eleq2i 2181 |
. . . . . 6
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4 | df-clab 2102 |
. . . . . 6
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5 | 3, 4 | bitri 183 |
. . . . 5
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6 | 3simpa 961 |
. . . . . 6
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7 | 6 | sbimi 1720 |
. . . . 5
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8 | 5, 7 | sylbi 120 |
. . . 4
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9 | nfv 1491 |
. . . . 5
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10 | 9 | sbf 1733 |
. . . 4
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11 | 8, 10 | sylib 121 |
. . 3
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12 | 11 | exlimiv 1560 |
. 2
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13 | 1, 12 | syl 14 |
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-5 1406 ax-gen 1408 ax-ie1 1452 ax-ie2 1453 ax-8 1465 ax-4 1470 ax-17 1489 ax-i9 1493 ax-ial 1497 ax-ext 2097 |
This theorem depends on definitions: df-bi 116 df-3an 947 df-nf 1420 df-sb 1719 df-clab 2102 df-cleq 2108 df-clel 2111 df-v 2659 df-op 3502 |
This theorem is referenced by: opth1 4118 opth 4119 0nelop 4130 |
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