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Mirrors > Home > MPE Home > Th. List > cnveq | Structured version Visualization version GIF version |
Description: Equality theorem for converse relation. (Contributed by NM, 13-Aug-1995.) |
Ref | Expression |
---|---|
cnveq | ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cnvss 5707 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → ◡𝐴 ⊆ ◡𝐵) | |
2 | cnvss 5707 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → ◡𝐵 ⊆ ◡𝐴) | |
3 | 1, 2 | anim12i 615 | . 2 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴) → (◡𝐴 ⊆ ◡𝐵 ∧ ◡𝐵 ⊆ ◡𝐴)) |
4 | eqss 3930 | . 2 ⊢ (𝐴 = 𝐵 ↔ (𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐴)) | |
5 | eqss 3930 | . 2 ⊢ (◡𝐴 = ◡𝐵 ↔ (◡𝐴 ⊆ ◡𝐵 ∧ ◡𝐵 ⊆ ◡𝐴)) | |
6 | 3, 4, 5 | 3imtr4i 295 | 1 ⊢ (𝐴 = 𝐵 → ◡𝐴 = ◡𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1538 ⊆ wss 3881 ◡ccnv 5518 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-ex 1782 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-v 3443 df-in 3888 df-ss 3898 df-br 5031 df-opab 5093 df-cnv 5527 |
This theorem is referenced by: cnveqi 5709 cnveqd 5710 rneq 5770 cnveqb 6020 predeq123 6117 f1eq1 6544 f1ssf1 6621 f1o00 6624 foeqcnvco 7034 funcnvuni 7618 tposfn2 7897 ereq1 8279 infeq3 8928 1arith 16253 vdwmc 16304 vdwnnlem1 16321 ramub2 16340 rami 16341 isps 17804 istsr 17819 isdir 17834 isrim0 19471 psrbag 20602 psrbaglefi 20610 iscn 21840 ishmeo 22364 symgtgp 22711 ustincl 22813 ustdiag 22814 ustinvel 22815 ustexhalf 22816 ustexsym 22821 ust0 22825 isi1f 24278 itg1val 24287 fta1lem 24903 fta1 24904 vieta1lem2 24907 vieta1 24908 sqff1o 25767 istrl 27486 isspth 27513 upgrwlkdvspth 27528 uhgrwkspthlem1 27542 0spth 27911 nlfnval 29664 padct 30481 tocyc01 30810 cycpmconjslem2 30847 indf1ofs 31395 ismbfm 31620 issibf 31701 sitgfval 31709 eulerpartlemelr 31725 eulerpartleme 31731 eulerpartlemo 31733 eulerpartlemt0 31737 eulerpartlemt 31739 eulerpartgbij 31740 eulerpartlemr 31742 eulerpartlemgs2 31748 eulerpartlemn 31749 eulerpart 31750 funen1cnv 32467 iscvm 32619 elmpst 32896 elsymrels2 35949 elsymrels4 35951 symreleq 35954 elrefsymrels2 35965 eleqvrels2 35987 eldisjs 36115 lkrval 36384 ltrncnvnid 37423 cdlemkuu 38191 pw2f1o2val 39980 pwfi2f1o 40040 clcnvlem 40323 rfovcnvf1od 40705 fsovrfovd 40710 issmflem 43361 isrngisom 44520 |
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