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Mirrors > Home > MPE Home > Th. List > odupos | Structured version Visualization version GIF version |
Description: Being a poset is a self-dual property. (Contributed by Stefan O'Rear, 29-Jan-2015.) |
Ref | Expression |
---|---|
odupos.d | ⊢ 𝐷 = (ODual‘𝑂) |
Ref | Expression |
---|---|
odupos | ⊢ (𝑂 ∈ Poset → 𝐷 ∈ Poset) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | odupos.d | . . . 4 ⊢ 𝐷 = (ODual‘𝑂) | |
2 | 1 | fvexi 6688 | . . 3 ⊢ 𝐷 ∈ V |
3 | 2 | a1i 11 | . 2 ⊢ (𝑂 ∈ Poset → 𝐷 ∈ V) |
4 | eqid 2738 | . . . 4 ⊢ (Base‘𝑂) = (Base‘𝑂) | |
5 | 1, 4 | odubas 17859 | . . 3 ⊢ (Base‘𝑂) = (Base‘𝐷) |
6 | 5 | a1i 11 | . 2 ⊢ (𝑂 ∈ Poset → (Base‘𝑂) = (Base‘𝐷)) |
7 | eqid 2738 | . . . 4 ⊢ (le‘𝑂) = (le‘𝑂) | |
8 | 1, 7 | oduleval 17857 | . . 3 ⊢ ◡(le‘𝑂) = (le‘𝐷) |
9 | 8 | a1i 11 | . 2 ⊢ (𝑂 ∈ Poset → ◡(le‘𝑂) = (le‘𝐷)) |
10 | 4, 7 | posref 17677 | . . 3 ⊢ ((𝑂 ∈ Poset ∧ 𝑎 ∈ (Base‘𝑂)) → 𝑎(le‘𝑂)𝑎) |
11 | vex 3402 | . . . 4 ⊢ 𝑎 ∈ V | |
12 | 11, 11 | brcnv 5725 | . . 3 ⊢ (𝑎◡(le‘𝑂)𝑎 ↔ 𝑎(le‘𝑂)𝑎) |
13 | 10, 12 | sylibr 237 | . 2 ⊢ ((𝑂 ∈ Poset ∧ 𝑎 ∈ (Base‘𝑂)) → 𝑎◡(le‘𝑂)𝑎) |
14 | vex 3402 | . . . . 5 ⊢ 𝑏 ∈ V | |
15 | 11, 14 | brcnv 5725 | . . . 4 ⊢ (𝑎◡(le‘𝑂)𝑏 ↔ 𝑏(le‘𝑂)𝑎) |
16 | 14, 11 | brcnv 5725 | . . . 4 ⊢ (𝑏◡(le‘𝑂)𝑎 ↔ 𝑎(le‘𝑂)𝑏) |
17 | 15, 16 | anbi12ci 631 | . . 3 ⊢ ((𝑎◡(le‘𝑂)𝑏 ∧ 𝑏◡(le‘𝑂)𝑎) ↔ (𝑎(le‘𝑂)𝑏 ∧ 𝑏(le‘𝑂)𝑎)) |
18 | 4, 7 | posasymb 17678 | . . . 4 ⊢ ((𝑂 ∈ Poset ∧ 𝑎 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂)) → ((𝑎(le‘𝑂)𝑏 ∧ 𝑏(le‘𝑂)𝑎) ↔ 𝑎 = 𝑏)) |
19 | 18 | biimpd 232 | . . 3 ⊢ ((𝑂 ∈ Poset ∧ 𝑎 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂)) → ((𝑎(le‘𝑂)𝑏 ∧ 𝑏(le‘𝑂)𝑎) → 𝑎 = 𝑏)) |
20 | 17, 19 | syl5bi 245 | . 2 ⊢ ((𝑂 ∈ Poset ∧ 𝑎 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂)) → ((𝑎◡(le‘𝑂)𝑏 ∧ 𝑏◡(le‘𝑂)𝑎) → 𝑎 = 𝑏)) |
21 | 3anrev 1102 | . . . 4 ⊢ ((𝑎 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂) ∧ 𝑐 ∈ (Base‘𝑂)) ↔ (𝑐 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂) ∧ 𝑎 ∈ (Base‘𝑂))) | |
22 | 4, 7 | postr 17679 | . . . 4 ⊢ ((𝑂 ∈ Poset ∧ (𝑐 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂) ∧ 𝑎 ∈ (Base‘𝑂))) → ((𝑐(le‘𝑂)𝑏 ∧ 𝑏(le‘𝑂)𝑎) → 𝑐(le‘𝑂)𝑎)) |
23 | 21, 22 | sylan2b 597 | . . 3 ⊢ ((𝑂 ∈ Poset ∧ (𝑎 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂) ∧ 𝑐 ∈ (Base‘𝑂))) → ((𝑐(le‘𝑂)𝑏 ∧ 𝑏(le‘𝑂)𝑎) → 𝑐(le‘𝑂)𝑎)) |
24 | vex 3402 | . . . . 5 ⊢ 𝑐 ∈ V | |
25 | 14, 24 | brcnv 5725 | . . . 4 ⊢ (𝑏◡(le‘𝑂)𝑐 ↔ 𝑐(le‘𝑂)𝑏) |
26 | 15, 25 | anbi12ci 631 | . . 3 ⊢ ((𝑎◡(le‘𝑂)𝑏 ∧ 𝑏◡(le‘𝑂)𝑐) ↔ (𝑐(le‘𝑂)𝑏 ∧ 𝑏(le‘𝑂)𝑎)) |
27 | 11, 24 | brcnv 5725 | . . 3 ⊢ (𝑎◡(le‘𝑂)𝑐 ↔ 𝑐(le‘𝑂)𝑎) |
28 | 23, 26, 27 | 3imtr4g 299 | . 2 ⊢ ((𝑂 ∈ Poset ∧ (𝑎 ∈ (Base‘𝑂) ∧ 𝑏 ∈ (Base‘𝑂) ∧ 𝑐 ∈ (Base‘𝑂))) → ((𝑎◡(le‘𝑂)𝑏 ∧ 𝑏◡(le‘𝑂)𝑐) → 𝑎◡(le‘𝑂)𝑐)) |
29 | 3, 6, 9, 13, 20, 28 | isposd 17681 | 1 ⊢ (𝑂 ∈ Poset → 𝐷 ∈ Poset) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 ∧ w3a 1088 = wceq 1542 ∈ wcel 2114 Vcvv 3398 class class class wbr 5030 ◡ccnv 5524 ‘cfv 6339 Basecbs 16586 lecple 16675 Posetcpo 17666 ODualcodu 17854 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1975 ax-7 2020 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2162 ax-12 2179 ax-ext 2710 ax-sep 5167 ax-nul 5174 ax-pow 5232 ax-pr 5296 ax-un 7479 ax-cnex 10671 ax-resscn 10672 ax-1cn 10673 ax-icn 10674 ax-addcl 10675 ax-addrcl 10676 ax-mulcl 10677 ax-mulrcl 10678 ax-mulcom 10679 ax-addass 10680 ax-mulass 10681 ax-distr 10682 ax-i2m1 10683 ax-1ne0 10684 ax-1rid 10685 ax-rnegex 10686 ax-rrecex 10687 ax-cnre 10688 ax-pre-lttri 10689 ax-pre-lttrn 10690 ax-pre-ltadd 10691 ax-pre-mulgt0 10692 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1787 df-nf 1791 df-sb 2075 df-mo 2540 df-eu 2570 df-clab 2717 df-cleq 2730 df-clel 2811 df-nfc 2881 df-ne 2935 df-nel 3039 df-ral 3058 df-rex 3059 df-reu 3060 df-rab 3062 df-v 3400 df-sbc 3681 df-csb 3791 df-dif 3846 df-un 3848 df-in 3850 df-ss 3860 df-pss 3862 df-nul 4212 df-if 4415 df-pw 4490 df-sn 4517 df-pr 4519 df-tp 4521 df-op 4523 df-uni 4797 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5429 df-eprel 5434 df-po 5442 df-so 5443 df-fr 5483 df-we 5485 df-xp 5531 df-rel 5532 df-cnv 5533 df-co 5534 df-dm 5535 df-rn 5536 df-res 5537 df-ima 5538 df-pred 6129 df-ord 6175 df-on 6176 df-lim 6177 df-suc 6178 df-iota 6297 df-fun 6341 df-fn 6342 df-f 6343 df-f1 6344 df-fo 6345 df-f1o 6346 df-fv 6347 df-riota 7127 df-ov 7173 df-oprab 7174 df-mpo 7175 df-om 7600 df-wrecs 7976 df-recs 8037 df-rdg 8075 df-er 8320 df-en 8556 df-dom 8557 df-sdom 8558 df-pnf 10755 df-mnf 10756 df-xr 10757 df-ltxr 10758 df-le 10759 df-sub 10950 df-neg 10951 df-nn 11717 df-2 11779 df-3 11780 df-4 11781 df-5 11782 df-6 11783 df-7 11784 df-8 11785 df-9 11786 df-dec 12180 df-ndx 16589 df-slot 16590 df-base 16592 df-sets 16593 df-ple 16688 df-proset 17654 df-poset 17672 df-odu 17855 |
This theorem is referenced by: oduposb 17862 posglbd 17876 odutos 30823 |
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