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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 4644 |
. 2
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2 | vex 2740 |
. . . . . . 7
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3 | vex 2740 |
. . . . . . 7
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4 | 2, 3 | opth2 4240 |
. . . . . 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 3778 |
. . . . . 6
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13 | 12 | eqeq2d 2189 |
. . . . 5
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14 | opeq2 3779 |
. . . . . 6
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15 | 14 | eqeq2d 2189 |
. . . . 5
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16 | 13, 15 | rspc2ev 2856 |
. . . 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 4121 ax-pow 4174 ax-pr 4209 |
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 2739 df-un 3133 df-in 3135 df-ss 3142 df-pw 3577 df-sn 3598 df-pr 3599 df-op 3601 df-opab 4065 df-xp 4632 |
This theorem is referenced by: brxp 4657 opelxpi 4658 opelxp1 4660 opelxp2 4661 opthprc 4677 elxp3 4680 opeliunxp 4681 optocl 4702 xpiindim 4764 opelres 4912 resiexg 4952 restidsing 4963 codir 5017 qfto 5018 xpmlem 5049 rnxpid 5063 ssrnres 5071 dfco2 5128 relssdmrn 5149 ressn 5169 opelf 5387 fnovex 5907 oprab4 5945 resoprab 5970 elmpocl 6068 fo1stresm 6161 fo2ndresm 6162 dfoprab4 6192 xporderlem 6231 f1od2 6235 brecop 6624 xpdom2 6830 djulclb 7053 djuss 7068 enq0enq 7429 enq0sym 7430 enq0tr 7432 nqnq0pi 7436 nnnq0lem1 7444 elinp 7472 genipv 7507 prsrlem1 7740 gt0srpr 7746 opelcn 7824 opelreal 7825 elreal2 7828 frecuzrdgrrn 10407 frec2uzrdg 10408 frecuzrdgrcl 10409 frecuzrdgsuc 10413 frecuzrdgrclt 10414 frecuzrdgsuctlem 10422 fisumcom2 11445 fprodcom2fi 11633 sqpweven 12174 2sqpwodd 12175 phimullem 12224 txuni2 13726 txcnp 13741 txcnmpt 13743 txdis1cn 13748 txlm 13749 xmeterval 13905 limccnp2lem 14115 limccnp2cntop 14116 |
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