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Mirrors > Home > MPE Home > Th. List > invsym | Structured version Visualization version GIF version |
Description: The inverse relation is symmetric. (Contributed by Mario Carneiro, 2-Jan-2017.) |
Ref | Expression |
---|---|
invfval.b | β’ π΅ = (BaseβπΆ) |
invfval.n | β’ π = (InvβπΆ) |
invfval.c | β’ (π β πΆ β Cat) |
invfval.x | β’ (π β π β π΅) |
invfval.y | β’ (π β π β π΅) |
Ref | Expression |
---|---|
invsym | β’ (π β (πΉ(πππ)πΊ β πΊ(πππ)πΉ)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | invfval.b | . . . 4 β’ π΅ = (BaseβπΆ) | |
2 | invfval.n | . . . 4 β’ π = (InvβπΆ) | |
3 | invfval.c | . . . 4 β’ (π β πΆ β Cat) | |
4 | invfval.x | . . . 4 β’ (π β π β π΅) | |
5 | invfval.y | . . . 4 β’ (π β π β π΅) | |
6 | eqid 2730 | . . . 4 β’ (SectβπΆ) = (SectβπΆ) | |
7 | 1, 2, 3, 4, 5, 6 | isinv 17711 | . . 3 β’ (π β (πΉ(πππ)πΊ β (πΉ(π(SectβπΆ)π)πΊ β§ πΊ(π(SectβπΆ)π)πΉ))) |
8 | 7 | biancomd 462 | . 2 β’ (π β (πΉ(πππ)πΊ β (πΊ(π(SectβπΆ)π)πΉ β§ πΉ(π(SectβπΆ)π)πΊ))) |
9 | 1, 2, 3, 5, 4, 6 | isinv 17711 | . 2 β’ (π β (πΊ(πππ)πΉ β (πΊ(π(SectβπΆ)π)πΉ β§ πΉ(π(SectβπΆ)π)πΊ))) |
10 | 8, 9 | bitr4d 281 | 1 β’ (π β (πΉ(πππ)πΊ β πΊ(πππ)πΉ)) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β wb 205 β§ wa 394 = wceq 1539 β wcel 2104 class class class wbr 5147 βcfv 6542 (class class class)co 7411 Basecbs 17148 Catccat 17612 Sectcsect 17695 Invcinv 17696 |
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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-ral 3060 df-rex 3069 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-id 5573 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-ov 7414 df-oprab 7415 df-mpo 7416 df-1st 7977 df-2nd 7978 df-sect 17698 df-inv 17699 |
This theorem is referenced by: invsym2 17714 inviso2 17718 invisoinvl 17741 invisoinvr 17742 |
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