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Mirrors > Home > ILE Home > Th. List > ssoprab2b | Unicode version |
Description: Equivalence of ordered pair abstraction subclass and implication. Compare ssopab2b 4278. (Contributed by FL, 6-Nov-2013.) (Proof shortened by Mario Carneiro, 11-Dec-2016.) |
Ref | Expression |
---|---|
ssoprab2b |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nfoprab1 5926 |
. . . 4
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2 | nfoprab1 5926 |
. . . 4
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3 | 1, 2 | nfss 3150 |
. . 3
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4 | nfoprab2 5927 |
. . . . 5
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5 | nfoprab2 5927 |
. . . . 5
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6 | 4, 5 | nfss 3150 |
. . . 4
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7 | nfoprab3 5928 |
. . . . . 6
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8 | nfoprab3 5928 |
. . . . . 6
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9 | 7, 8 | nfss 3150 |
. . . . 5
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10 | ssel 3151 |
. . . . . 6
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11 | oprabid 5909 |
. . . . . 6
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12 | oprabid 5909 |
. . . . . 6
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13 | 10, 11, 12 | 3imtr3g 204 |
. . . . 5
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14 | 9, 13 | alrimi 1522 |
. . . 4
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15 | 6, 14 | alrimi 1522 |
. . 3
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16 | 3, 15 | alrimi 1522 |
. 2
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17 | ssoprab2 5933 |
. 2
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18 | 16, 17 | impbii 126 |
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 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-14 2151 ax-ext 2159 ax-sep 4123 ax-pow 4176 ax-pr 4211 ax-setind 4538 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-ral 2460 df-v 2741 df-dif 3133 df-un 3135 df-in 3137 df-ss 3144 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-oprab 5881 |
This theorem is referenced by: eqoprab2b 5935 |
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