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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 2240 |
. . . . . 6
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2 | 1 | anbi2d 464 |
. . . . 5
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3 | eqidd 2178 |
. . . . . . 7
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4 | preq2 3671 |
. . . . . . 7
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5 | 3, 4 | preq12d 3678 |
. . . . . 6
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6 | 5 | eleq2d 2247 |
. . . . 5
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7 | 2, 6 | anbi12d 473 |
. . . 4
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8 | df-3an 980 |
. . . 4
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9 | df-3an 980 |
. . . 4
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10 | 7, 8, 9 | 3bitr4g 223 |
. . 3
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11 | 10 | abbidv 2295 |
. 2
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12 | df-op 3602 |
. 2
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13 | df-op 3602 |
. 2
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14 | 11, 12, 13 | 3eqtr4g 2235 |
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-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-ext 2159 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-v 2740 df-un 3134 df-sn 3599 df-pr 3600 df-op 3602 |
This theorem is referenced by: opeq12 3781 opeq2i 3783 opeq2d 3786 oteq2 3789 oteq3 3790 breq2 4008 cbvopab2 4078 cbvopab2v 4081 opthg 4239 eqvinop 4244 opelopabsb 4261 opelxp 4657 opabid2 4759 elrn2g 4818 opeldm 4831 opeldmg 4833 elrn2 4870 opelresg 4915 iss 4954 elimasng 4997 issref 5012 dmsnopg 5101 cnvsng 5115 elxp4 5117 elxp5 5118 dffun5r 5229 funopg 5251 f1osng 5503 tz6.12f 5545 fsn 5689 fsng 5690 fvsng 5713 oveq2 5883 cbvoprab2 5948 ovg 6013 opabex3d 6122 opabex3 6123 op1stg 6151 op2ndg 6152 oprssdmm 6172 op1steq 6180 dfoprab4f 6194 tfrlemibxssdm 6328 tfr1onlembxssdm 6344 tfrcllembxssdm 6357 elixpsn 6735 ixpsnf1o 6736 mapsnen 6811 xpsnen 6821 xpassen 6830 xpf1o 6844 djulclr 7048 djurclr 7049 djulcl 7050 djurcl 7051 djulclb 7054 inl11 7064 djuss 7069 1stinl 7073 2ndinl 7074 1stinr 7075 2ndinr 7076 elreal 7827 ax1rid 7876 fseq1p1m1 10094 imasaddfnlemg 12735 cnmpt21 13794 djucllem 14555 |
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