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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 5582 | . 2 ⊢ (〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷) ↔ ∃𝑥 ∈ 𝐶 ∃𝑦 ∈ 𝐷 〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉) | |
2 | vex 3500 | . . . . . . 7 ⊢ 𝑥 ∈ V | |
3 | vex 3500 | . . . . . . 7 ⊢ 𝑦 ∈ V | |
4 | 2, 3 | opth2 5375 | . . . . . 6 ⊢ (〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 ↔ (𝐴 = 𝑥 ∧ 𝐵 = 𝑦)) |
5 | eleq1 2903 | . . . . . . 7 ⊢ (𝐴 = 𝑥 → (𝐴 ∈ 𝐶 ↔ 𝑥 ∈ 𝐶)) | |
6 | eleq1 2903 | . . . . . . 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 3295 | . . 3 ⊢ (∃𝑥 ∈ 𝐶 ∃𝑦 ∈ 𝐷 〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 → (𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷)) |
11 | eqid 2824 | . . . 4 ⊢ 〈𝐴, 𝐵〉 = 〈𝐴, 𝐵〉 | |
12 | opeq1 4806 | . . . . . 6 ⊢ (𝑥 = 𝐴 → 〈𝑥, 𝑦〉 = 〈𝐴, 𝑦〉) | |
13 | 12 | eqeq2d 2835 | . . . . 5 ⊢ (𝑥 = 𝐴 → (〈𝐴, 𝐵〉 = 〈𝑥, 𝑦〉 ↔ 〈𝐴, 𝐵〉 = 〈𝐴, 𝑦〉)) |
14 | opeq2 4807 | . . . . . 6 ⊢ (𝑦 = 𝐵 → 〈𝐴, 𝑦〉 = 〈𝐴, 𝐵〉) | |
15 | 14 | eqeq2d 2835 | . . . . 5 ⊢ (𝑦 = 𝐵 → (〈𝐴, 𝐵〉 = 〈𝐴, 𝑦〉 ↔ 〈𝐴, 𝐵〉 = 〈𝐴, 𝐵〉)) |
16 | 13, 15 | rspc2ev 3638 | . . . 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 1536 ∈ wcel 2113 ∃wrex 3142 〈cop 4576 × cxp 5556 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-sep 5206 ax-nul 5213 ax-pr 5333 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ral 3146 df-rex 3147 df-rab 3150 df-v 3499 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-nul 4295 df-if 4471 df-sn 4571 df-pr 4573 df-op 4577 df-opab 5132 df-xp 5564 |
This theorem is referenced by: opelxpi 5595 opelxp1 5599 opelxp2 5600 otel3xp 5602 brxp 5604 opthprc 5619 elxp3 5621 opeliunxp 5622 bropaex12 5645 optocl 5648 xpsspw 5685 xpiindi 5709 opelres 5862 restidsing 5925 codir 5983 qfto 5984 xpnz 6019 difxp 6024 xpdifid 6028 dfco2 6101 relssdmrn 6124 ressn 6139 opelf 6542 oprab4 7243 resoprab 7273 oprssdm 7332 nssdmovg 7333 ndmovg 7334 elmpocl 7390 fo1stres 7718 fo2ndres 7719 dfoprab4 7756 opiota 7760 bropopvvv 7788 bropfvvvvlem 7789 curry1 7802 xporderlem 7824 fnwelem 7828 mpoxopxprcov0 7886 mpocurryd 7938 brecop 8393 brecop2 8394 eceqoveq 8405 xpdom2 8615 mapunen 8689 djuss 9352 djuunxp 9353 dfac5lem2 9553 iunfo 9964 ordpipq 10367 prsrlem1 10497 opelcn 10554 opelreal 10555 elreal2 10557 swrdnznd 14007 swrd00 14009 swrdcl 14010 swrd0 14023 pfx00 14039 pfx0 14040 fsumcom2 15132 fprodcom2 15341 phimullem 16119 imasvscafn 16813 homarcl2 17298 evlfcl 17475 clatl 17729 matplusgcell 21045 iscnp2 21850 txuni2 22176 txcls 22215 txcnpi 22219 txcnp 22231 txcnmpt 22235 txdis1cn 22246 txtube 22251 hausdiag 22256 txlm 22259 tx1stc 22261 txkgen 22263 txflf 22617 tmdcn2 22700 tgphaus 22728 qustgplem 22732 fmucndlem 22903 xmeterval 23045 metustexhalf 23169 blval2 23175 bcthlem1 23930 ovolfcl 24070 ovoliunlem1 24106 mbfimaopnlem 24259 limccnp2 24493 fsumvma 25792 lgsquadlem1 25959 lgsquadlem2 25960 dmrab 30263 xppreima2 30398 aciunf1lem 30410 f1od2 30460 smatrcl 31065 smatlem 31066 qtophaus 31104 eulerpartlemgvv 31638 erdszelem10 32451 cvmlift2lem10 32563 cvmlift2lem12 32565 msubff 32781 elmpst 32787 mpstrcl 32792 elmpps 32824 dfso2 32994 fv1stcnv 33024 fv2ndcnv 33025 txpss3v 33343 dfrdg4 33416 bj-opelrelex 34440 bj-opelidres 34457 bj-elid6 34466 bj-eldiag2 34473 bj-inftyexpitaudisj 34491 curf 34874 curunc 34878 heiborlem3 35095 xrnss3v 35628 inxpxrn 35647 dibopelvalN 38283 dibopelval2 38285 dib1dim 38305 dihopcl 38393 dih1 38426 dih1dimatlem 38469 hdmap1val 38938 pellex 39438 elnonrel 39951 fourierdlem42 42441 etransclem44 42570 ovn0lem 42854 ndmaovg 43390 aoprssdm 43408 ndmaovcl 43409 ndmaovrcl 43410 ndmaovcom 43411 ndmaovass 43412 ndmaovdistr 43413 sprsymrelfvlem 43659 sprsymrelfolem2 43662 prproropf1olem2 43673 opeliun2xp 44388 |
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