| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > 1st2ndbr | Structured version Visualization version GIF version | ||
| Description: Express an element of a relation as a relationship between first and second components. (Contributed by Mario Carneiro, 22-Jun-2016.) |
| Ref | Expression |
|---|---|
| 1st2ndbr | ⊢ ((Rel 𝐵 ∧ 𝐴 ∈ 𝐵) → (1st ‘𝐴)𝐵(2nd ‘𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1st2nd 7995 | . . 3 ⊢ ((Rel 𝐵 ∧ 𝐴 ∈ 𝐵) → 𝐴 = 〈(1st ‘𝐴), (2nd ‘𝐴)〉) | |
| 2 | simpr 484 | . . 3 ⊢ ((Rel 𝐵 ∧ 𝐴 ∈ 𝐵) → 𝐴 ∈ 𝐵) | |
| 3 | 1, 2 | eqeltrrd 2838 | . 2 ⊢ ((Rel 𝐵 ∧ 𝐴 ∈ 𝐵) → 〈(1st ‘𝐴), (2nd ‘𝐴)〉 ∈ 𝐵) |
| 4 | df-br 5101 | . 2 ⊢ ((1st ‘𝐴)𝐵(2nd ‘𝐴) ↔ 〈(1st ‘𝐴), (2nd ‘𝐴)〉 ∈ 𝐵) | |
| 5 | 3, 4 | sylibr 234 | 1 ⊢ ((Rel 𝐵 ∧ 𝐴 ∈ 𝐵) → (1st ‘𝐴)𝐵(2nd ‘𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2114 〈cop 4588 class class class wbr 5100 Rel wrel 5639 ‘cfv 6502 1st c1st 7943 2nd c2nd 7944 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5245 ax-nul 5255 ax-pr 5381 ax-un 7692 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5529 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-iota 6458 df-fun 6504 df-fv 6510 df-1st 7945 df-2nd 7946 |
| This theorem is referenced by: cofuval 17820 cofu1 17822 cofu2 17824 cofucl 17826 cofuass 17827 cofulid 17828 cofurid 17829 funcres 17834 cofull 17874 cofth 17875 isnat2 17889 fuccocl 17905 fucidcl 17906 fuclid 17907 fucrid 17908 fucass 17909 fucsect 17913 fucinv 17914 invfuc 17915 fuciso 17916 natpropd 17917 fucpropd 17918 homahom 17977 homadm 17978 homacd 17979 homadmcd 17980 catciso 18049 prfval 18136 prfcl 18140 prf1st 18141 prf2nd 18142 1st2ndprf 18143 evlfcllem 18158 evlfcl 18159 curf1cl 18165 curf2cl 18168 curfcl 18169 uncf1 18173 uncf2 18174 curfuncf 18175 uncfcurf 18176 diag1cl 18179 diag2cl 18183 curf2ndf 18184 yon1cl 18200 oyon1cl 18208 yonedalem1 18209 yonedalem21 18210 yonedalem3a 18211 yonedalem4c 18214 yonedalem22 18215 yonedalem3b 18216 yonedalem3 18217 yonedainv 18218 yonffthlem 18219 yoniso 18222 utop2nei 24211 utop3cls 24212 func1st2nd 49464 oppfval2 49525 idfullsubc 49549 fulloppf 49551 fthoppf 49552 up1st2nd2 49576 uptra 49603 uptrar 49604 uptr2a 49610 diag1 49692 fuco11bALT 49726 precofvalALT 49756 thincciso 49841 thincciso2 49843 eufunclem 49909 |
| Copyright terms: Public domain | W3C validator |