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Mirrors > Home > MPE Home > Th. List > opelxp | Structured version Visualization version GIF version |
Description: Ordered pair membership in a Cartesian 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 | ⊢ (〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷) ↔ (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elxp2 5579 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷) ↔ ∃𝑥 ∈ 𝐶 ∃𝑦 ∈ 𝐷 〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉) | |
2 | vex 3497 | . . . . . . 7 ⊢ 𝑥 ∈ V | |
3 | vex 3497 | . . . . . . 7 ⊢ 𝑦 ∈ V | |
4 | 2, 3 | opth2 5372 | . . . . . 6 ⊢ (〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 ↔ (𝐴 = 𝑥 ∧ 𝐵 = 𝑦)) |
5 | eleq1 2900 | . . . . . . 7 ⊢ (𝐴 = 𝑥 → (𝐴 ∈ 𝐶 ↔ 𝑥 ∈ 𝐶)) | |
6 | eleq1 2900 | . . . . . . 7 ⊢ (𝐵 = 𝑦 → (𝐵 ∈ 𝐷 ↔ 𝑦 ∈ 𝐷)) | |
7 | 5, 6 | bi2anan9 637 | . . . . . 6 ⊢ ((𝐴 = 𝑥 ∧ 𝐵 = 𝑦) → ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) ↔ (𝑥 ∈ 𝐶 ∧ 𝑦 ∈ 𝐷))) |
8 | 4, 7 | sylbi 219 | . . . . 5 ⊢ (〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 → ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) ↔ (𝑥 ∈ 𝐶 ∧ 𝑦 ∈ 𝐷))) |
9 | 8 | biimprcd 252 | . . . 4 ⊢ ((𝑥 ∈ 𝐶 ∧ 𝑦 ∈ 𝐷) → (〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 → (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷))) |
10 | 9 | rexlimivv 3292 | . . 3 ⊢ (∃𝑥 ∈ 𝐶 ∃𝑦 ∈ 𝐷 〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 → (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷)) |
11 | eqid 2821 | . . . 4 ⊢ 〈𝐴, 𝐵〉 = 〈𝐴, 𝐵〉 | |
12 | opeq1 4803 | . . . . . 6 ⊢ (𝑥 = 𝐴 → 〈𝑥, 𝑦〉 = 〈𝐴, 𝑦〉) | |
13 | 12 | eqeq2d 2832 | . . . . 5 ⊢ (𝑥 = 𝐴 → (〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 ↔ 〈𝐴, 𝐵〉 = 〈𝐴, 𝑦〉)) |
14 | opeq2 4804 | . . . . . 6 ⊢ (𝑦 = 𝐵 → 〈𝐴, 𝑦〉 = 〈𝐴, 𝐵〉) | |
15 | 14 | eqeq2d 2832 | . . . . 5 ⊢ (𝑦 = 𝐵 → (〈𝐴, 𝐵〉 = 〈𝐴, 𝑦〉 ↔ 〈𝐴, 𝐵〉 = 〈𝐴, 𝐵〉)) |
16 | 13, 15 | rspc2ev 3635 | . . . 4 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷 ∧ 〈𝐴, 𝐵〉 = 〈𝐴, 𝐵〉) → ∃𝑥 ∈ 𝐶 ∃𝑦 ∈ 𝐷 〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉) |
17 | 11, 16 | mp3an3 1446 | . . 3 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → ∃𝑥 ∈ 𝐶 ∃𝑦 ∈ 𝐷 〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉) |
18 | 10, 17 | impbii 211 | . 2 ⊢ (∃𝑥 ∈ 𝐶 ∃𝑦 ∈ 𝐷 〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 ↔ (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷)) |
19 | 1, 18 | bitri 277 | 1 ⊢ (〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷) ↔ (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∃wrex 3139 〈cop 4573 × cxp 5553 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-opab 5129 df-xp 5561 |
This theorem is referenced by: opelxpi 5592 opelxp1 5596 opelxp2 5597 otel3xp 5599 brxp 5601 opthprc 5616 elxp3 5618 opeliunxp 5619 bropaex12 5642 optocl 5645 xpsspw 5682 xpiindi 5706 opelres 5859 restidsing 5922 codir 5980 qfto 5981 xpnz 6016 difxp 6021 xpdifid 6025 dfco2 6098 relssdmrn 6121 ressn 6136 opelf 6539 oprab4 7240 resoprab 7270 oprssdm 7329 nssdmovg 7330 ndmovg 7331 elmpocl 7387 fo1stres 7715 fo2ndres 7716 dfoprab4 7753 opiota 7757 bropopvvv 7785 bropfvvvvlem 7786 curry1 7799 xporderlem 7821 fnwelem 7825 mpoxopxprcov0 7883 mpocurryd 7935 brecop 8390 brecop2 8391 eceqoveq 8402 xpdom2 8612 mapunen 8686 djuss 9349 djuunxp 9350 dfac5lem2 9550 iunfo 9961 ordpipq 10364 prsrlem1 10494 opelcn 10551 opelreal 10552 elreal2 10554 swrdnznd 14004 swrd00 14006 swrdcl 14007 swrd0 14020 pfx00 14036 pfx0 14037 fsumcom2 15129 fprodcom2 15338 phimullem 16116 imasvscafn 16810 homarcl2 17295 evlfcl 17472 clatl 17726 matplusgcell 21042 iscnp2 21847 txuni2 22173 txcls 22212 txcnpi 22216 txcnp 22228 txcnmpt 22232 txdis1cn 22243 txtube 22248 hausdiag 22253 txlm 22256 tx1stc 22258 txkgen 22260 txflf 22614 tmdcn2 22697 tgphaus 22725 qustgplem 22729 fmucndlem 22900 xmeterval 23042 metustexhalf 23166 blval2 23172 bcthlem1 23927 ovolfcl 24067 ovoliunlem1 24103 mbfimaopnlem 24256 limccnp2 24490 fsumvma 25789 lgsquadlem1 25956 lgsquadlem2 25957 dmrab 30260 xppreima2 30395 aciunf1lem 30407 f1od2 30457 smatrcl 31061 smatlem 31062 qtophaus 31100 eulerpartlemgvv 31634 erdszelem10 32447 cvmlift2lem10 32559 cvmlift2lem12 32561 msubff 32777 elmpst 32783 mpstrcl 32788 elmpps 32820 dfso2 32990 fv1stcnv 33020 fv2ndcnv 33021 txpss3v 33339 dfrdg4 33412 bj-opelrelex 34439 bj-opelidres 34456 bj-elid6 34465 bj-eldiag2 34472 bj-inftyexpitaudisj 34490 curf 34885 curunc 34889 heiborlem3 35106 xrnss3v 35639 inxpxrn 35658 dibopelvalN 38294 dibopelval2 38296 dib1dim 38316 dihopcl 38404 dih1 38437 dih1dimatlem 38480 hdmap1val 38949 pellex 39481 elnonrel 39994 fourierdlem42 42483 etransclem44 42612 ovn0lem 42896 ndmaovg 43432 aoprssdm 43450 ndmaovcl 43451 ndmaovrcl 43452 ndmaovcom 43453 ndmaovass 43454 ndmaovdistr 43455 sprsymrelfvlem 43701 sprsymrelfolem2 43704 prproropf1olem2 43715 opeliun2xp 44430 |
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