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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 4565 |
. 2
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2 | vex 2692 |
. . . . . . 7
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3 | vex 2692 |
. . . . . . 7
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4 | 2, 3 | opth2 4170 |
. . . . . 6
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5 | eleq1 2203 |
. . . . . . 7
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6 | eleq1 2203 |
. . . . . . 7
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7 | 5, 6 | bi2anan9 596 |
. . . . . 6
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8 | 4, 7 | sylbi 120 |
. . . . 5
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9 | 8 | biimprcd 159 |
. . . 4
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10 | 9 | rexlimivv 2558 |
. . 3
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11 | eqid 2140 |
. . . 4
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12 | opeq1 3713 |
. . . . . 6
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13 | 12 | eqeq2d 2152 |
. . . . 5
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14 | opeq2 3714 |
. . . . . 6
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15 | 14 | eqeq2d 2152 |
. . . . 5
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16 | 13, 15 | rspc2ev 2808 |
. . . 4
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17 | 11, 16 | mp3an3 1305 |
. . 3
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18 | 10, 17 | impbii 125 |
. 2
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19 | 1, 18 | bitri 183 |
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 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ral 2422 df-rex 2423 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-opab 3998 df-xp 4553 |
This theorem is referenced by: brxp 4578 opelxpi 4579 opelxp1 4581 opelxp2 4582 opthprc 4598 elxp3 4601 opeliunxp 4602 optocl 4623 xpiindim 4684 opelres 4832 resiexg 4872 codir 4935 qfto 4936 xpmlem 4967 rnxpid 4981 ssrnres 4989 dfco2 5046 relssdmrn 5067 ressn 5087 opelf 5302 fnovex 5812 oprab4 5850 resoprab 5875 elmpocl 5976 fo1stresm 6067 fo2ndresm 6068 dfoprab4 6098 xporderlem 6136 f1od2 6140 brecop 6527 xpdom2 6733 djulclb 6948 djuss 6963 enq0enq 7263 enq0sym 7264 enq0tr 7266 nqnq0pi 7270 nnnq0lem1 7278 elinp 7306 genipv 7341 prsrlem1 7574 gt0srpr 7580 opelcn 7658 opelreal 7659 elreal2 7662 frecuzrdgrrn 10212 frec2uzrdg 10213 frecuzrdgrcl 10214 frecuzrdgsuc 10218 frecuzrdgrclt 10219 frecuzrdgsuctlem 10227 fisumcom2 11239 sqpweven 11889 2sqpwodd 11890 phimullem 11937 txuni2 12464 txcnp 12479 txcnmpt 12481 txdis1cn 12486 txlm 12487 xmeterval 12643 limccnp2lem 12853 limccnp2cntop 12854 |
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