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Mirrors > Home > MPE Home > Th. List > Mathboxes > ipolub | Structured version Visualization version GIF version |
Description: The LUB of the inclusion poset. (hypotheses "ipolub.s" and "ipolub.t" could be eliminated with 𝑆 ∈ dom 𝑈.) Could be significantly shortened if poslubdg 18132 is in quantified form. mrelatlub 18280 could potentially be shortened using this. See mrelatlubALT 46281. (Contributed by Zhi Wang, 28-Sep-2024.) |
Ref | Expression |
---|---|
ipolub.i | ⊢ 𝐼 = (toInc‘𝐹) |
ipolub.f | ⊢ (𝜑 → 𝐹 ∈ 𝑉) |
ipolub.s | ⊢ (𝜑 → 𝑆 ⊆ 𝐹) |
ipolub.u | ⊢ (𝜑 → 𝑈 = (lub‘𝐼)) |
ipolubdm.t | ⊢ (𝜑 → 𝑇 = ∩ {𝑥 ∈ 𝐹 ∣ ∪ 𝑆 ⊆ 𝑥}) |
ipolub.t | ⊢ (𝜑 → 𝑇 ∈ 𝐹) |
Ref | Expression |
---|---|
ipolub | ⊢ (𝜑 → (𝑈‘𝑆) = 𝑇) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2738 | . 2 ⊢ (le‘𝐼) = (le‘𝐼) | |
2 | ipolub.f | . . 3 ⊢ (𝜑 → 𝐹 ∈ 𝑉) | |
3 | ipolub.i | . . . 4 ⊢ 𝐼 = (toInc‘𝐹) | |
4 | 3 | ipobas 18249 | . . 3 ⊢ (𝐹 ∈ 𝑉 → 𝐹 = (Base‘𝐼)) |
5 | 2, 4 | syl 17 | . 2 ⊢ (𝜑 → 𝐹 = (Base‘𝐼)) |
6 | ipolub.u | . 2 ⊢ (𝜑 → 𝑈 = (lub‘𝐼)) | |
7 | 3 | ipopos 18254 | . . 3 ⊢ 𝐼 ∈ Poset |
8 | 7 | a1i 11 | . 2 ⊢ (𝜑 → 𝐼 ∈ Poset) |
9 | ipolub.s | . 2 ⊢ (𝜑 → 𝑆 ⊆ 𝐹) | |
10 | ipolub.t | . 2 ⊢ (𝜑 → 𝑇 ∈ 𝐹) | |
11 | breq1 5077 | . . 3 ⊢ (𝑤 = 𝑦 → (𝑤(le‘𝐼)𝑇 ↔ 𝑦(le‘𝐼)𝑇)) | |
12 | ipolubdm.t | . . . . . . 7 ⊢ (𝜑 → 𝑇 = ∩ {𝑥 ∈ 𝐹 ∣ ∪ 𝑆 ⊆ 𝑥}) | |
13 | intubeu 46270 | . . . . . . . 8 ⊢ (𝑇 ∈ 𝐹 → ((∪ 𝑆 ⊆ 𝑇 ∧ ∀𝑣 ∈ 𝐹 (∪ 𝑆 ⊆ 𝑣 → 𝑇 ⊆ 𝑣)) ↔ 𝑇 = ∩ {𝑥 ∈ 𝐹 ∣ ∪ 𝑆 ⊆ 𝑥})) | |
14 | 13 | biimpar 478 | . . . . . . 7 ⊢ ((𝑇 ∈ 𝐹 ∧ 𝑇 = ∩ {𝑥 ∈ 𝐹 ∣ ∪ 𝑆 ⊆ 𝑥}) → (∪ 𝑆 ⊆ 𝑇 ∧ ∀𝑣 ∈ 𝐹 (∪ 𝑆 ⊆ 𝑣 → 𝑇 ⊆ 𝑣))) |
15 | 10, 12, 14 | syl2anc 584 | . . . . . 6 ⊢ (𝜑 → (∪ 𝑆 ⊆ 𝑇 ∧ ∀𝑣 ∈ 𝐹 (∪ 𝑆 ⊆ 𝑣 → 𝑇 ⊆ 𝑣))) |
16 | 3, 2, 9, 1 | ipolublem 46272 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑇 ∈ 𝐹) → ((∪ 𝑆 ⊆ 𝑇 ∧ ∀𝑣 ∈ 𝐹 (∪ 𝑆 ⊆ 𝑣 → 𝑇 ⊆ 𝑣)) ↔ (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑇 ∧ ∀𝑣 ∈ 𝐹 (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑇(le‘𝐼)𝑣)))) |
17 | 10, 16 | mpdan 684 | . . . . . 6 ⊢ (𝜑 → ((∪ 𝑆 ⊆ 𝑇 ∧ ∀𝑣 ∈ 𝐹 (∪ 𝑆 ⊆ 𝑣 → 𝑇 ⊆ 𝑣)) ↔ (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑇 ∧ ∀𝑣 ∈ 𝐹 (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑇(le‘𝐼)𝑣)))) |
18 | 15, 17 | mpbid 231 | . . . . 5 ⊢ (𝜑 → (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑇 ∧ ∀𝑣 ∈ 𝐹 (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑇(le‘𝐼)𝑣))) |
19 | 18 | simpld 495 | . . . 4 ⊢ (𝜑 → ∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑇) |
20 | 19 | adantr 481 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑆) → ∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑇) |
21 | simpr 485 | . . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑆) → 𝑦 ∈ 𝑆) | |
22 | 11, 20, 21 | rspcdva 3562 | . 2 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑆) → 𝑦(le‘𝐼)𝑇) |
23 | breq2 5078 | . . . . . . 7 ⊢ (𝑣 = 𝑧 → (𝑤(le‘𝐼)𝑣 ↔ 𝑤(le‘𝐼)𝑧)) | |
24 | 23 | ralbidv 3112 | . . . . . 6 ⊢ (𝑣 = 𝑧 → (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 ↔ ∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑧)) |
25 | breq1 5077 | . . . . . . 7 ⊢ (𝑤 = 𝑦 → (𝑤(le‘𝐼)𝑧 ↔ 𝑦(le‘𝐼)𝑧)) | |
26 | 25 | cbvralvw 3383 | . . . . . 6 ⊢ (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑧 ↔ ∀𝑦 ∈ 𝑆 𝑦(le‘𝐼)𝑧) |
27 | 24, 26 | bitrdi 287 | . . . . 5 ⊢ (𝑣 = 𝑧 → (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 ↔ ∀𝑦 ∈ 𝑆 𝑦(le‘𝐼)𝑧)) |
28 | breq2 5078 | . . . . 5 ⊢ (𝑣 = 𝑧 → (𝑇(le‘𝐼)𝑣 ↔ 𝑇(le‘𝐼)𝑧)) | |
29 | 27, 28 | imbi12d 345 | . . . 4 ⊢ (𝑣 = 𝑧 → ((∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑇(le‘𝐼)𝑣) ↔ (∀𝑦 ∈ 𝑆 𝑦(le‘𝐼)𝑧 → 𝑇(le‘𝐼)𝑧))) |
30 | 18 | simprd 496 | . . . . 5 ⊢ (𝜑 → ∀𝑣 ∈ 𝐹 (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑇(le‘𝐼)𝑣)) |
31 | 30 | adantr 481 | . . . 4 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐹) → ∀𝑣 ∈ 𝐹 (∀𝑤 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑇(le‘𝐼)𝑣)) |
32 | simpr 485 | . . . 4 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐹) → 𝑧 ∈ 𝐹) | |
33 | 29, 31, 32 | rspcdva 3562 | . . 3 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐹) → (∀𝑦 ∈ 𝑆 𝑦(le‘𝐼)𝑧 → 𝑇(le‘𝐼)𝑧)) |
34 | 33 | 3impia 1116 | . 2 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝐹 ∧ ∀𝑦 ∈ 𝑆 𝑦(le‘𝐼)𝑧) → 𝑇(le‘𝐼)𝑧) |
35 | 1, 5, 6, 8, 9, 10, 22, 34 | poslubdg 18132 | 1 ⊢ (𝜑 → (𝑈‘𝑆) = 𝑇) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1539 ∈ wcel 2106 ∀wral 3064 {crab 3068 ⊆ wss 3887 ∪ cuni 4839 ∩ cint 4879 class class class wbr 5074 ‘cfv 6433 Basecbs 16912 lecple 16969 Posetcpo 18025 lubclub 18027 toInccipo 18245 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-rmo 3071 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-dec 12438 df-uz 12583 df-fz 13240 df-struct 16848 df-slot 16883 df-ndx 16895 df-base 16913 df-tset 16981 df-ple 16982 df-ocomp 16983 df-proset 18013 df-poset 18031 df-lub 18064 df-ipo 18246 |
This theorem is referenced by: ipolub0 46278 mrelatlubALT 46281 toplatlub 46286 toplatjoin 46288 |
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