Mathbox for Zhi Wang |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > ipoglbdm | Structured version Visualization version GIF version |
Description: The domain of the GLB of the inclusion poset. (Contributed by Zhi Wang, 29-Sep-2024.) |
Ref | Expression |
---|---|
ipolub.i | ⊢ 𝐼 = (toInc‘𝐹) |
ipolub.f | ⊢ (𝜑 → 𝐹 ∈ 𝑉) |
ipolub.s | ⊢ (𝜑 → 𝑆 ⊆ 𝐹) |
ipoglb.g | ⊢ (𝜑 → 𝐺 = (glb‘𝐼)) |
ipoglbdm.t | ⊢ (𝜑 → 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) |
Ref | Expression |
---|---|
ipoglbdm | ⊢ (𝜑 → (𝑆 ∈ dom 𝐺 ↔ 𝑇 ∈ 𝐹)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ipolub.s | . . 3 ⊢ (𝜑 → 𝑆 ⊆ 𝐹) | |
2 | ipolub.f | . . . . 5 ⊢ (𝜑 → 𝐹 ∈ 𝑉) | |
3 | ipolub.i | . . . . . 6 ⊢ 𝐼 = (toInc‘𝐹) | |
4 | 3 | ipobas 18164 | . . . . 5 ⊢ (𝐹 ∈ 𝑉 → 𝐹 = (Base‘𝐼)) |
5 | 2, 4 | syl 17 | . . . 4 ⊢ (𝜑 → 𝐹 = (Base‘𝐼)) |
6 | eqidd 2739 | . . . 4 ⊢ (𝜑 → (le‘𝐼) = (le‘𝐼)) | |
7 | ipoglb.g | . . . 4 ⊢ (𝜑 → 𝐺 = (glb‘𝐼)) | |
8 | eqid 2738 | . . . . 5 ⊢ (le‘𝐼) = (le‘𝐼) | |
9 | 3, 2, 1, 8 | ipoglblem 46163 | . . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → ((𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤)) ↔ (∀𝑦 ∈ 𝑆 𝑤(le‘𝐼)𝑦 ∧ ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑤)))) |
10 | 3 | ipopos 18169 | . . . . 5 ⊢ 𝐼 ∈ Poset |
11 | 10 | a1i 11 | . . . 4 ⊢ (𝜑 → 𝐼 ∈ Poset) |
12 | 5, 6, 7, 9, 11 | glbeldm2d 46141 | . . 3 ⊢ (𝜑 → (𝑆 ∈ dom 𝐺 ↔ (𝑆 ⊆ 𝐹 ∧ ∃𝑤 ∈ 𝐹 (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤))))) |
13 | 1, 12 | mpbirand 703 | . 2 ⊢ (𝜑 → (𝑆 ∈ dom 𝐺 ↔ ∃𝑤 ∈ 𝐹 (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤)))) |
14 | ipoglbdm.t | . . . . . . 7 ⊢ (𝜑 → 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) | |
15 | 14 | ad2antrr 722 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑤 ∈ 𝐹) ∧ (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤))) → 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) |
16 | unilbeu 46159 | . . . . . . . 8 ⊢ (𝑤 ∈ 𝐹 → ((𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤)) ↔ 𝑤 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆})) | |
17 | 16 | biimpa 476 | . . . . . . 7 ⊢ ((𝑤 ∈ 𝐹 ∧ (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤))) → 𝑤 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) |
18 | 17 | adantll 710 | . . . . . 6 ⊢ (((𝜑 ∧ 𝑤 ∈ 𝐹) ∧ (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤))) → 𝑤 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) |
19 | 15, 18 | eqtr4d 2781 | . . . . 5 ⊢ (((𝜑 ∧ 𝑤 ∈ 𝐹) ∧ (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤))) → 𝑇 = 𝑤) |
20 | simplr 765 | . . . . 5 ⊢ (((𝜑 ∧ 𝑤 ∈ 𝐹) ∧ (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤))) → 𝑤 ∈ 𝐹) | |
21 | 19, 20 | eqeltrd 2839 | . . . 4 ⊢ (((𝜑 ∧ 𝑤 ∈ 𝐹) ∧ (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤))) → 𝑇 ∈ 𝐹) |
22 | 21 | ex 412 | . . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → ((𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤)) → 𝑇 ∈ 𝐹)) |
23 | simpr 484 | . . 3 ⊢ ((𝜑 ∧ 𝑇 ∈ 𝐹) → 𝑇 ∈ 𝐹) | |
24 | unilbeu 46159 | . . . . 5 ⊢ (𝑇 ∈ 𝐹 → ((𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇)) ↔ 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆})) | |
25 | 24 | biimparc 479 | . . . 4 ⊢ ((𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆} ∧ 𝑇 ∈ 𝐹) → (𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
26 | 14, 25 | sylan 579 | . . 3 ⊢ ((𝜑 ∧ 𝑇 ∈ 𝐹) → (𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
27 | sseq1 3942 | . . . 4 ⊢ (𝑤 = 𝑇 → (𝑤 ⊆ ∩ 𝑆 ↔ 𝑇 ⊆ ∩ 𝑆)) | |
28 | sseq2 3943 | . . . . . 6 ⊢ (𝑤 = 𝑇 → (𝑧 ⊆ 𝑤 ↔ 𝑧 ⊆ 𝑇)) | |
29 | 28 | imbi2d 340 | . . . . 5 ⊢ (𝑤 = 𝑇 → ((𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤) ↔ (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
30 | 29 | ralbidv 3120 | . . . 4 ⊢ (𝑤 = 𝑇 → (∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤) ↔ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
31 | 27, 30 | anbi12d 630 | . . 3 ⊢ (𝑤 = 𝑇 → ((𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤)) ↔ (𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇)))) |
32 | 22, 23, 26, 31 | rspceb2dv 46036 | . 2 ⊢ (𝜑 → (∃𝑤 ∈ 𝐹 (𝑤 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑤)) ↔ 𝑇 ∈ 𝐹)) |
33 | 13, 32 | bitrd 278 | 1 ⊢ (𝜑 → (𝑆 ∈ dom 𝐺 ↔ 𝑇 ∈ 𝐹)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ∀wral 3063 ∃wrex 3064 {crab 3067 ⊆ wss 3883 ∪ cuni 4836 ∩ cint 4876 dom cdm 5580 ‘cfv 6418 Basecbs 16840 lecple 16895 Posetcpo 17940 glbcglb 17943 toInccipo 18160 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-z 12250 df-dec 12367 df-uz 12512 df-fz 13169 df-struct 16776 df-slot 16811 df-ndx 16823 df-base 16841 df-tset 16907 df-ple 16908 df-ocomp 16909 df-proset 17928 df-poset 17946 df-glb 17980 df-ipo 18161 |
This theorem is referenced by: mreclat 46171 topclat 46172 |
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