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| Mirrors > Home > MPE Home > Th. List > 1st2nd2 | Structured version Visualization version GIF version | ||
| Description: Reconstruction of a member of a Cartesian product in terms of its ordered pair components. (Contributed by NM, 20-Oct-2013.) |
| Ref | Expression |
|---|---|
| 1st2nd2 | ⊢ (𝐴 ∈ (𝐵 × 𝐶) → 𝐴 = 〈(1st ‘𝐴), (2nd ‘𝐴)〉) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elxp6 8024 | . 2 ⊢ (𝐴 ∈ (𝐵 × 𝐶) ↔ (𝐴 = 〈(1st ‘𝐴), (2nd ‘𝐴)〉 ∧ ((1st ‘𝐴) ∈ 𝐵 ∧ (2nd ‘𝐴) ∈ 𝐶))) | |
| 2 | 1 | simplbi 502 | 1 ⊢ (𝐴 ∈ (𝐵 × 𝐶) → 𝐴 = 〈(1st ‘𝐴), (2nd ‘𝐴)〉) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 〈cop 4590 × cxp 5649 ‘cfv 6531 1st c1st 7988 2nd c2nd 7989 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pr 5391 ax-un 7740 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-iota 6487 df-fun 6533 df-fv 6539 df-1st 7990 df-2nd 7991 |
| This theorem is used by: 1st2ndb 8030 xpopth 8031 eqop 8032 2nd1st 8038 1st2nd 8039 opiota 8059 fimaproj 8136 disjen 9137 xpmapenlem 9147 mapunen 9149 djulf1o 9974 djurf1o 9975 djur 9981 r0weon 10072 enqbreq2 10986 nqereu 10995 lterpq 11036 elreal2 11198 cnref1o 13094 ruclem6 16383 ruclem8 16385 ruclem9 16386 ruclem12 16389 eucalgval 16737 eucalginv 16739 eucalglt 16740 eucalg 16742 qnumdenbi 16900 isstruct2 17307 xpsff1o 17719 comfffval2 17855 comfeq 17860 idfucl 18036 funcpropd 18057 coapm 18226 xpccatid 18342 1stfcl 18351 2ndfcl 18352 1st2ndprf 18360 xpcpropd 18362 evlfcl 18376 hofcl 18413 hofpropd 18421 yonedalem3 18434 gsum2dlem2 20165 mdetunilem9 22915 tx1cn 23908 tx2cn 23909 txdis 23931 txlly 23935 txnlly 23936 txhaus 23946 txkgen 23951 txconn 23988 utop3cls 24550 ucnima 24579 fmucndlem 24589 psmetxrge0 24612 imasdsf1olem 24672 cnheiborlem 25255 caublcls 25610 bcthlem1 25625 bcthlem2 25626 bcthlem4 25628 bcthlem5 25629 ovolfcl 25767 ovolfioo 25768 ovolficc 25769 ovolficcss 25770 ovolfsval 25771 ovolicc2lem1 25818 ovolicc2lem5 25822 ovolfs2 25872 uniiccdif 25879 uniioovol 25880 uniiccvol 25881 uniioombllem2a 25883 uniioombllem2 25884 uniioombllem3a 25885 uniioombllem3 25886 uniioombllem4 25887 uniioombllem5 25888 uniioombllem6 25889 dyadmbl 25901 fsumvma 27522 opreu2reuALT 33055 ofpreima 33241 ofpreima2 33242 elrgspnsubrunlem2 33791 erler 33808 1stmbfm 34875 2ndmbfm 34876 sibfof 34955 oddpwdcv 34970 txsconnlem 35974 mpst123 36274 bj-elid4 38057 bj-elid6 38059 poimirlem4 38510 poimirlem26 38532 poimirlem27 38533 mblfinlem1 38543 mblfinlem2 38544 ftc2nc 38588 heiborlem8 38720 dvhgrp 42132 dvhlveclem 42133 fvovco 46151 dvnprodlem1 46900 volioof 46941 fvvolioof 46943 fvvolicof 46945 etransclem44 47232 ovolval3 47601 ovolval4lem1 47603 ovolval5lem2 47607 ovnovollem1 47610 ovnovollem2 47611 smfpimbor1lem1 47752 rrx2xpref1o 49774 2oppf 50184 eloppf 50185 funcoppc5 50197 swapf2f1oa 50329 swapfida 50332 swapffunca 50336 swapfiso 50337 cofuswapf1 50346 cofuswapf2 50347 fuco2eld2 50366 fuco11b 50389 fuco11bALT 50390 fucoco2 50410 fucofunca 50412 fucolid 50413 fucorid 50414 precofvalALT 50420 reldmlan2 50669 reldmran2 50670 rellan 50675 relran 50676 ranval3 50683 ranrcl4lem 50690 ranup 50694 |
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