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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 4593 × cxp 5657 ‘cfv 6537 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 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pr 5402 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-iota 6493 df-fun 6539 df-fv 6545 df-1st 7990 df-2nd 7991 |
| This theorem is used by: 1st2ndb 8030 xpopth 8031 eqop 8032 2nd1st 8039 1st2nd 8040 opiota 8060 fimaproj 8137 disjen 9136 xpmapenlem 9146 mapunen 9148 djulf1o 9921 djurf1o 9922 djur 9928 r0weon 10019 enqbreq2 10933 nqereu 10942 lterpq 10983 elreal2 11145 cnref1o 13039 ruclem6 16329 ruclem8 16331 ruclem9 16332 ruclem12 16335 eucalgval 16678 eucalginv 16680 eucalglt 16681 eucalg 16683 qnumdenbi 16841 isstruct2 17247 xpsff1o 17659 comfffval2 17795 comfeq 17800 idfucl 17976 funcpropd 17997 coapm 18166 xpccatid 18282 1stfcl 18291 2ndfcl 18292 1st2ndprf 18300 xpcpropd 18302 evlfcl 18316 hofcl 18353 hofpropd 18361 yonedalem3 18374 gsum2dlem2 20104 mdetunilem9 22848 tx1cn 23841 tx2cn 23842 txdis 23864 txlly 23868 txnlly 23869 txhaus 23879 txkgen 23884 txconn 23921 utop3cls 24483 ucnima 24512 fmucndlem 24522 psmetxrge0 24545 imasdsf1olem 24605 cnheiborlem 25188 caublcls 25543 bcthlem1 25558 bcthlem2 25559 bcthlem4 25561 bcthlem5 25562 ovolfcl 25700 ovolfioo 25701 ovolficc 25702 ovolficcss 25703 ovolfsval 25704 ovolicc2lem1 25751 ovolicc2lem5 25755 ovolfs2 25805 uniiccdif 25812 uniioovol 25813 uniiccvol 25814 uniioombllem2a 25816 uniioombllem2 25817 uniioombllem3a 25818 uniioombllem3 25819 uniioombllem4 25820 uniioombllem5 25821 uniioombllem6 25822 dyadmbl 25834 fsumvma 27457 opreu2reuALT 32960 ofpreima 33146 ofpreima2 33147 elrgspnsubrunlem2 33696 erler 33713 1stmbfm 34779 2ndmbfm 34780 sibfof 34859 oddpwdcv 34874 txsconnlem 35827 mpst123 36127 bj-elid4 37928 bj-elid6 37930 poimirlem4 38381 poimirlem26 38403 poimirlem27 38404 mblfinlem1 38414 mblfinlem2 38415 ftc2nc 38459 heiborlem8 38576 dvhgrp 41988 dvhlveclem 41989 fvovco 46033 dvnprodlem1 46782 volioof 46823 fvvolioof 46825 fvvolicof 46827 etransclem44 47114 ovolval3 47483 ovolval4lem1 47485 ovolval5lem2 47489 ovnovollem1 47492 ovnovollem2 47493 smfpimbor1lem1 47634 rrx2xpref1o 49656 2oppf 50066 eloppf 50067 funcoppc5 50079 swapf2f1oa 50211 swapfida 50214 swapffunca 50218 swapfiso 50219 cofuswapf1 50228 cofuswapf2 50229 fuco2eld2 50248 fuco11b 50271 fuco11bALT 50272 fucoco2 50292 fucofunca 50294 fucolid 50295 fucorid 50296 precofvalALT 50302 reldmlan2 50551 reldmran2 50552 rellan 50557 relran 50558 ranval3 50565 ranrcl4lem 50572 ranup 50576 |
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