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Mirrors > Home > ILE Home > Th. List > opeq2 | Unicode version |
Description: Equality theorem for ordered pairs. (Contributed by NM, 25-Jun-1998.) (Revised by Mario Carneiro, 26-Apr-2015.) |
Ref | Expression |
---|---|
opeq2 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq1 2162 |
. . . . . 6
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2 | 1 | anbi2d 455 |
. . . . 5
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3 | eqidd 2101 |
. . . . . . 7
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4 | preq2 3548 |
. . . . . . 7
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5 | 3, 4 | preq12d 3555 |
. . . . . 6
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6 | 5 | eleq2d 2169 |
. . . . 5
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7 | 2, 6 | anbi12d 460 |
. . . 4
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8 | df-3an 932 |
. . . 4
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9 | df-3an 932 |
. . . 4
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10 | 7, 8, 9 | 3bitr4g 222 |
. . 3
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11 | 10 | abbidv 2217 |
. 2
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12 | df-op 3483 |
. 2
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13 | df-op 3483 |
. 2
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14 | 11, 12, 13 | 3eqtr4g 2157 |
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-v 2643 df-un 3025 df-sn 3480 df-pr 3481 df-op 3483 |
This theorem is referenced by: opeq12 3654 opeq2i 3656 opeq2d 3659 oteq2 3662 oteq3 3663 breq2 3879 cbvopab2 3942 cbvopab2v 3945 opthg 4098 eqvinop 4103 opelopabsb 4120 opelxp 4507 opabid2 4608 elrn2g 4667 opeldm 4680 opeldmg 4682 elrn2 4719 opelresg 4762 iss 4801 elimasng 4843 issref 4857 dmsnopg 4946 cnvsng 4960 elxp4 4962 elxp5 4963 dffun5r 5071 funopg 5093 f1osng 5342 tz6.12f 5382 fsn 5524 fsng 5525 fvsng 5548 oveq2 5714 cbvoprab2 5776 ovg 5841 opabex3d 5950 opabex3 5951 op1stg 5979 op2ndg 5980 op1steq 6007 dfoprab4f 6021 tfrlemibxssdm 6154 tfr1onlembxssdm 6170 tfrcllembxssdm 6183 elixpsn 6559 ixpsnf1o 6560 mapsnen 6635 xpsnen 6644 xpassen 6653 xpf1o 6667 djulclr 6849 djurclr 6850 djulcl 6851 djurcl 6852 djulclb 6855 inl11 6865 djuss 6870 1stinl 6874 2ndinl 6875 1stinr 6876 2ndinr 6877 elreal 7516 ax1rid 7562 fseq1p1m1 9715 cnmpt21 12241 djucllem 12588 |
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