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Mirrors > Home > ILE Home > Th. List > opelxp | Unicode version |
Description: Ordered pair membership in a cross product. (Contributed by NM, 15-Nov-1994.) (Proof shortened by Andrew Salmon, 12-Aug-2011.) (Revised by Mario Carneiro, 26-Apr-2015.) |
Ref | Expression |
---|---|
opelxp |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elxp2 4645 |
. 2
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2 | vex 2741 |
. . . . . . 7
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3 | vex 2741 |
. . . . . . 7
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4 | 2, 3 | opth2 4241 |
. . . . . 6
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5 | eleq1 2240 |
. . . . . . 7
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6 | eleq1 2240 |
. . . . . . 7
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7 | 5, 6 | bi2anan9 606 |
. . . . . 6
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8 | 4, 7 | sylbi 121 |
. . . . 5
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9 | 8 | biimprcd 160 |
. . . 4
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10 | 9 | rexlimivv 2600 |
. . 3
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11 | eqid 2177 |
. . . 4
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12 | opeq1 3779 |
. . . . . 6
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13 | 12 | eqeq2d 2189 |
. . . . 5
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14 | opeq2 3780 |
. . . . . 6
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15 | 14 | eqeq2d 2189 |
. . . . 5
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16 | 13, 15 | rspc2ev 2857 |
. . . 4
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17 | 11, 16 | mp3an3 1326 |
. . 3
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18 | 10, 17 | impbii 126 |
. 2
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19 | 1, 18 | bitri 184 |
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-14 2151 ax-ext 2159 ax-sep 4122 ax-pow 4175 ax-pr 4210 |
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-ral 2460 df-rex 2461 df-v 2740 df-un 3134 df-in 3136 df-ss 3143 df-pw 3578 df-sn 3599 df-pr 3600 df-op 3602 df-opab 4066 df-xp 4633 |
This theorem is referenced by: brxp 4658 opelxpi 4659 opelxp1 4661 opelxp2 4662 opthprc 4678 elxp3 4681 opeliunxp 4682 optocl 4703 xpiindim 4765 opelres 4913 resiexg 4953 restidsing 4964 codir 5018 qfto 5019 xpmlem 5050 rnxpid 5064 ssrnres 5072 dfco2 5129 relssdmrn 5150 ressn 5170 opelf 5388 fnovex 5908 oprab4 5946 resoprab 5971 elmpocl 6069 fo1stresm 6162 fo2ndresm 6163 dfoprab4 6193 xporderlem 6232 f1od2 6236 brecop 6625 xpdom2 6831 djulclb 7054 djuss 7069 enq0enq 7430 enq0sym 7431 enq0tr 7433 nqnq0pi 7437 nnnq0lem1 7445 elinp 7473 genipv 7508 prsrlem1 7741 gt0srpr 7747 opelcn 7825 opelreal 7826 elreal2 7829 frecuzrdgrrn 10408 frec2uzrdg 10409 frecuzrdgrcl 10410 frecuzrdgsuc 10414 frecuzrdgrclt 10415 frecuzrdgsuctlem 10423 fisumcom2 11446 fprodcom2fi 11634 sqpweven 12175 2sqpwodd 12176 phimullem 12225 txuni2 13759 txcnp 13774 txcnmpt 13776 txdis1cn 13781 txlm 13782 xmeterval 13938 limccnp2lem 14148 limccnp2cntop 14149 |
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