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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 8035 | . 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 1569 ∈ wcel 2144 〈cop 4834 × cxp 5648 ‘cfv 6538 1st c1st 7999 2nd c2nd 8000 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-iota 6494 df-fun 6540 df-fv 6546 df-1st 8001 df-2nd 8002 |
| This theorem is used by: 1st2ndb 8041 xpopth 8042 eqop 8043 2nd1st 8049 1st2nd 8050 opiota 8070 fimaproj 8154 disjen 9156 xpmapenlem 9166 mapunen 9168 djulf1o 9996 djurf1o 9997 djur 10003 r0weon 10094 enqbreq2 11008 nqereu 11017 lterpq 11058 elreal2 11220 cnref1o 13116 ruclem6 16408 ruclem8 16410 ruclem9 16411 ruclem12 16414 eucalgval 16762 eucalginv 16764 eucalglt 16765 eucalg 16767 qnumdenbi 16925 isstruct2 17332 xpsff1o 17744 comfffval2 17880 comfeq 17885 idfucl 18061 funcpropd 18082 coapm 18251 xpccatid 18367 1stfcl 18376 2ndfcl 18377 1st2ndprf 18385 xpcpropd 18387 evlfcl 18401 hofcl 18438 hofpropd 18446 yonedalem3 18459 gsum2dlem2 20190 mdetunilem9 22940 tx1cn 23933 tx2cn 23934 txdis 23956 txlly 23960 txnlly 23961 txhaus 23971 txkgen 23976 txconn 24013 utop3cls 24575 ucnima 24604 fmucndlem 24614 psmetxrge0 24637 imasdsf1olem 24697 cnheiborlem 25280 caublcls 25635 bcthlem1 25650 bcthlem2 25651 bcthlem4 25653 bcthlem5 25654 ovolfcl 25792 ovolfioo 25793 ovolficc 25794 ovolficcss 25795 ovolfsval 25796 ovolicc2lem1 25843 ovolicc2lem5 25847 ovolfs2 25897 uniiccdif 25904 uniioovol 25905 uniiccvol 25906 uniioombllem2a 25908 uniioombllem2 25909 uniioombllem3a 25910 uniioombllem3 25911 uniioombllem4 25912 uniioombllem5 25913 uniioombllem6 25914 dyadmbl 25926 fsumvma 27545 opreu2reuALT 33120 ofpreima 33306 ofpreima2 33307 elrgspnsubrunlem2 33855 erler 33872 1stmbfm 34938 2ndmbfm 34939 sibfof 35018 oddpwdcv 35033 txsconnlem 36091 mpst123 36391 bj-elid4 38182 bj-elid6 38184 poimirlem4 38635 poimirlem26 38657 poimirlem27 38658 mblfinlem1 38668 mblfinlem2 38669 ftc2nc 38713 heiborlem8 38845 dvhgrp 42257 dvhlveclem 42258 fvovco 46301 dvnprodlem1 47049 volioof 47090 fvvolioof 47092 fvvolicof 47094 etransclem44 47381 ovolval3 47750 ovolval4lem1 47752 ovolval5lem2 47756 ovnovollem1 47759 ovnovollem2 47760 smfpimbor1lem1 47901 2oppf 50341 eloppf 50342 funcoppc5 50354 swapf2f1oa 50492 swapfida 50495 swapffunca 50499 swapfiso 50500 cofuswapf1 50509 cofuswapf2 50510 fuco2eld2 50529 fuco11b 50552 fuco11bALT 50553 fucoco2 50573 fucofunca 50575 fucolid 50576 fucorid 50577 precofvalALT 50596 reldmlan2 50893 reldmran2 50894 rellan 50899 relran 50900 ranval3 50907 ranrcl4lem 50914 ranup 50918 |
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