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Mirrors > Home > ILE Home > Th. List > eqoprab2b | Unicode version |
Description: Equivalence of ordered pair abstraction subclass and biconditional. Compare eqopab2b 4310. (Contributed by Mario Carneiro, 4-Jan-2017.) |
Ref | Expression |
---|---|
eqoprab2b |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssoprab2b 5975 |
. . 3
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2 | ssoprab2b 5975 |
. . 3
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3 | 1, 2 | anbi12i 460 |
. 2
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4 | eqss 3194 |
. 2
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5 | 2albiim 1499 |
. . . 4
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6 | 5 | albii 1481 |
. . 3
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7 | 19.26 1492 |
. . 3
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8 | 6, 7 | bitri 184 |
. 2
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9 | 3, 4, 8 | 3bitr4i 212 |
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 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-14 2167 ax-ext 2175 ax-sep 4147 ax-pow 4203 ax-pr 4238 ax-setind 4569 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-ral 2477 df-v 2762 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-oprab 5922 |
This theorem is referenced by: mpo2eqb 6028 |
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