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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 2256 |
. . . . . 6
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2 | 1 | anbi2d 464 |
. . . . 5
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3 | eqidd 2194 |
. . . . . . 7
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4 | preq2 3696 |
. . . . . . 7
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5 | 3, 4 | preq12d 3703 |
. . . . . 6
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6 | 5 | eleq2d 2263 |
. . . . 5
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7 | 2, 6 | anbi12d 473 |
. . . 4
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8 | df-3an 982 |
. . . 4
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9 | df-3an 982 |
. . . 4
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10 | 7, 8, 9 | 3bitr4g 223 |
. . 3
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11 | 10 | abbidv 2311 |
. 2
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12 | df-op 3627 |
. 2
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13 | df-op 3627 |
. 2
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14 | 11, 12, 13 | 3eqtr4g 2251 |
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 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-ext 2175 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-v 2762 df-un 3157 df-sn 3624 df-pr 3625 df-op 3627 |
This theorem is referenced by: opeq12 3806 opeq2i 3808 opeq2d 3811 oteq2 3814 oteq3 3815 breq2 4033 cbvopab2 4103 cbvopab2v 4106 opthg 4267 eqvinop 4272 opelopabsb 4290 opelxp 4689 opabid2 4793 elrn2g 4852 opeldm 4865 opeldmg 4867 elrn2 4904 opelresg 4949 iss 4988 elimasng 5033 issref 5048 dmsnopg 5137 cnvsng 5151 elxp4 5153 elxp5 5154 dffun5r 5266 funopg 5288 f1osng 5541 tz6.12f 5583 fsn 5730 fsng 5731 fvsng 5754 oveq2 5926 cbvoprab2 5991 ovg 6057 opabex3d 6173 opabex3 6174 op1stg 6203 op2ndg 6204 oprssdmm 6224 op1steq 6232 dfoprab4f 6246 tfrlemibxssdm 6380 tfr1onlembxssdm 6396 tfrcllembxssdm 6409 elixpsn 6789 ixpsnf1o 6790 mapsnen 6865 xpsnen 6875 xpassen 6884 xpf1o 6900 djulclr 7108 djurclr 7109 djulcl 7110 djurcl 7111 djulclb 7114 inl11 7124 djuss 7129 1stinl 7133 2ndinl 7134 1stinr 7135 2ndinr 7136 elreal 7888 ax1rid 7937 fseq1p1m1 10160 imasaddfnlemg 12897 cnmpt21 14459 djucllem 15292 |
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