| 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 7983 | . . 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 5087 | . 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 4574 class class class wbr 5086 Rel wrel 5627 ‘cfv 6490 1st c1st 7931 2nd c2nd 7932 |
| 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 5231 ax-nul 5241 ax-pr 5368 ax-un 7680 |
| 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 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-iota 6446 df-fun 6492 df-fv 6498 df-1st 7933 df-2nd 7934 |
| This theorem is referenced by: cofuval 17838 cofu1 17840 cofu2 17842 cofucl 17844 cofuass 17845 cofulid 17846 cofurid 17847 funcres 17852 cofull 17892 cofth 17893 isnat2 17907 fuccocl 17923 fucidcl 17924 fuclid 17925 fucrid 17926 fucass 17927 fucsect 17931 fucinv 17932 invfuc 17933 fuciso 17934 natpropd 17935 fucpropd 17936 homahom 17995 homadm 17996 homacd 17997 homadmcd 17998 catciso 18067 prfval 18154 prfcl 18158 prf1st 18159 prf2nd 18160 1st2ndprf 18161 evlfcllem 18176 evlfcl 18177 curf1cl 18183 curf2cl 18186 curfcl 18187 uncf1 18191 uncf2 18192 curfuncf 18193 uncfcurf 18194 diag1cl 18197 diag2cl 18201 curf2ndf 18202 yon1cl 18218 oyon1cl 18226 yonedalem1 18227 yonedalem21 18228 yonedalem3a 18229 yonedalem4c 18232 yonedalem22 18233 yonedalem3b 18234 yonedalem3 18235 yonedainv 18236 yonffthlem 18237 yoniso 18240 utop2nei 24224 utop3cls 24225 func1st2nd 49548 oppfval2 49609 idfullsubc 49633 fulloppf 49635 fthoppf 49636 up1st2nd2 49660 uptra 49687 uptrar 49688 uptr2a 49694 diag1 49776 fuco11bALT 49810 precofvalALT 49840 thincciso 49925 thincciso2 49927 eufunclem 49993 |
| Copyright terms: Public domain | W3C validator |