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Mirrors > Home > MPE Home > Th. List > cnveq | Structured version Visualization version GIF version |
Description: Equality theorem for converse. (Contributed by NM, 13-Aug-1995.) |
Ref | Expression |
---|---|
cnveq | ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnvss 5216 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → ◡𝐴 ⊆ ◡𝐵) | |
2 | cnvss 5216 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → ◡𝐵 ⊆ ◡𝐴) | |
3 | 1, 2 | anim12i 588 | . 2 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴) → (◡𝐴 ⊆ ◡𝐵 ∧ ◡𝐵 ⊆ ◡𝐴)) |
4 | eqss 3583 | . 2 ⊢ (𝐴 = 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴)) | |
5 | eqss 3583 | . 2 ⊢ (◡𝐴 = ◡𝐵 ↔ (◡𝐴 ⊆ ◡𝐵 ∧ ◡𝐵 ⊆ ◡𝐴)) | |
6 | 3, 4, 5 | 3imtr4i 280 | 1 ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 = wceq 1475 ⊆ wss 3540 ◡ccnv 5037 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-in 3547 df-ss 3554 df-br 4584 df-opab 4644 df-cnv 5046 |
This theorem is referenced by: cnveqi 5219 cnveqd 5220 rneq 5272 cnveqb 5508 predeq123 5598 f1eq1 6009 f1o00 6083 foeqcnvco 6455 funcnvuni 7012 tposfn2 7261 ereq1 7636 infeq3 8269 1arith 15469 vdwmc 15520 vdwnnlem1 15537 ramub2 15556 rami 15557 isps 17025 istsr 17040 isdir 17055 isrim0 18546 psrbag 19185 psrbaglefi 19193 iscn 20849 ishmeo 21372 symgtgp 21715 ustincl 21821 ustdiag 21822 ustinvel 21823 ustexhalf 21824 ustexsym 21829 ust0 21833 isi1f 23247 itg1val 23256 fta1lem 23866 fta1 23867 vieta1lem2 23870 vieta1 23871 sqff1o 24708 istrl 26067 isspth 26099 0spth 26101 nlfnval 28124 padct 28885 indf1ofs 29415 ismbfm 29641 issibf 29722 sitgfval 29730 eulerpartlemelr 29746 eulerpartleme 29752 eulerpartlemo 29754 eulerpartlemt0 29758 eulerpartlemt 29760 eulerpartgbij 29761 eulerpartlemr 29763 eulerpartlemgs2 29769 eulerpartlemn 29770 eulerpart 29771 iscvm 30495 elmpst 30687 lkrval 33393 ltrncnvnid 34431 cdlemkuu 35201 pw2f1o2val 36624 pwfi2f1o 36684 clcnvlem 36949 rfovcnvf1od 37318 fsovrfovd 37323 issmflem 39613 f1ssf1 40328 isTrl 40904 issPth 40930 upgrwlkdvspth 40945 uhgr1wlkspthlem1 40959 0spth-av 41294 isrngisom 41686 |
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