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| Mirrors > Home > MPE Home > Th. List > Mathboxes > ipoglb | Structured version Visualization version GIF version | ||
| Description: The GLB of the inclusion poset. (hypotheses "ipolub.s" and "ipoglb.t" could be eliminated with 𝑆 ∈ dom 𝐺.) Could be significantly shortened if posglbdg 18336 is in quantified form. mrelatglb 18483 could potentially be shortened using this. See mrelatglbALT 49241. (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}) |
| ipoglb.t | ⊢ (𝜑 → 𝑇 ∈ 𝐹) |
| Ref | Expression |
|---|---|
| ipoglb | ⊢ (𝜑 → (𝐺‘𝑆) = 𝑇) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2736 | . 2 ⊢ (le‘𝐼) = (le‘𝐼) | |
| 2 | ipolub.f | . . 3 ⊢ (𝜑 → 𝐹 ∈ 𝑉) | |
| 3 | ipolub.i | . . . 4 ⊢ 𝐼 = (toInc‘𝐹) | |
| 4 | 3 | ipobas 18454 | . . 3 ⊢ (𝐹 ∈ 𝑉 → 𝐹 = (Base‘𝐼)) |
| 5 | 2, 4 | syl 17 | . 2 ⊢ (𝜑 → 𝐹 = (Base‘𝐼)) |
| 6 | ipoglb.g | . 2 ⊢ (𝜑 → 𝐺 = (glb‘𝐼)) | |
| 7 | 3 | ipopos 18459 | . . 3 ⊢ 𝐼 ∈ Poset |
| 8 | 7 | a1i 11 | . 2 ⊢ (𝜑 → 𝐼 ∈ Poset) |
| 9 | ipolub.s | . 2 ⊢ (𝜑 → 𝑆 ⊆ 𝐹) | |
| 10 | ipoglb.t | . 2 ⊢ (𝜑 → 𝑇 ∈ 𝐹) | |
| 11 | breq2 5102 | . . 3 ⊢ (𝑦 = 𝑣 → (𝑇(le‘𝐼)𝑦 ↔ 𝑇(le‘𝐼)𝑣)) | |
| 12 | ipoglbdm.t | . . . . . . 7 ⊢ (𝜑 → 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) | |
| 13 | unilbeu 49230 | . . . . . . . 8 ⊢ (𝑇 ∈ 𝐹 → ((𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇)) ↔ 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆})) | |
| 14 | 13 | biimpar 477 | . . . . . . 7 ⊢ ((𝑇 ∈ 𝐹 ∧ 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) → (𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
| 15 | 10, 12, 14 | syl2anc 584 | . . . . . 6 ⊢ (𝜑 → (𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
| 16 | 3, 2, 9, 1 | ipoglblem 49234 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑇 ∈ 𝐹) → ((𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇)) ↔ (∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦 ∧ ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇)))) |
| 17 | 10, 16 | mpdan 687 | . . . . . 6 ⊢ (𝜑 → ((𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇)) ↔ (∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦 ∧ ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇)))) |
| 18 | 15, 17 | mpbid 232 | . . . . 5 ⊢ (𝜑 → (∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦 ∧ ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇))) |
| 19 | 18 | simpld 494 | . . . 4 ⊢ (𝜑 → ∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦) |
| 20 | 19 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑆) → ∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦) |
| 21 | simpr 484 | . . 3 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑆) → 𝑣 ∈ 𝑆) | |
| 22 | 11, 20, 21 | rspcdva 3577 | . 2 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑆) → 𝑇(le‘𝐼)𝑣) |
| 23 | breq1 5101 | . . . . . . 7 ⊢ (𝑧 = 𝑤 → (𝑧(le‘𝐼)𝑦 ↔ 𝑤(le‘𝐼)𝑦)) | |
| 24 | 23 | ralbidv 3159 | . . . . . 6 ⊢ (𝑧 = 𝑤 → (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 ↔ ∀𝑦 ∈ 𝑆 𝑤(le‘𝐼)𝑦)) |
| 25 | breq2 5102 | . . . . . . 7 ⊢ (𝑦 = 𝑣 → (𝑤(le‘𝐼)𝑦 ↔ 𝑤(le‘𝐼)𝑣)) | |
| 26 | 25 | cbvralvw 3214 | . . . . . 6 ⊢ (∀𝑦 ∈ 𝑆 𝑤(le‘𝐼)𝑦 ↔ ∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣) |
| 27 | 24, 26 | bitrdi 287 | . . . . 5 ⊢ (𝑧 = 𝑤 → (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 ↔ ∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣)) |
| 28 | breq1 5101 | . . . . 5 ⊢ (𝑧 = 𝑤 → (𝑧(le‘𝐼)𝑇 ↔ 𝑤(le‘𝐼)𝑇)) | |
| 29 | 27, 28 | imbi12d 344 | . . . 4 ⊢ (𝑧 = 𝑤 → ((∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇) ↔ (∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑤(le‘𝐼)𝑇))) |
| 30 | 18 | simprd 495 | . . . . 5 ⊢ (𝜑 → ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇)) |
| 31 | 30 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇)) |
| 32 | simpr 484 | . . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → 𝑤 ∈ 𝐹) | |
| 33 | 29, 31, 32 | rspcdva 3577 | . . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → (∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑤(le‘𝐼)𝑇)) |
| 34 | 33 | 3impia 1117 | . 2 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹 ∧ ∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣) → 𝑤(le‘𝐼)𝑇) |
| 35 | 1, 5, 6, 8, 9, 10, 22, 34 | posglbdg 18336 | 1 ⊢ (𝜑 → (𝐺‘𝑆) = 𝑇) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∀wral 3051 {crab 3399 ⊆ wss 3901 ∪ cuni 4863 ∩ cint 4902 class class class wbr 5098 ‘cfv 6492 Basecbs 17136 lecple 17184 Posetcpo 18230 glbcglb 18233 toInccipo 18450 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 ax-pre-mulgt0 11103 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-int 4903 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-er 8635 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-sub 11366 df-neg 11367 df-nn 12146 df-2 12208 df-3 12209 df-4 12210 df-5 12211 df-6 12212 df-7 12213 df-8 12214 df-9 12215 df-n0 12402 df-z 12489 df-dec 12608 df-uz 12752 df-fz 13424 df-struct 17074 df-sets 17091 df-slot 17109 df-ndx 17121 df-base 17137 df-tset 17196 df-ple 17197 df-ocomp 17198 df-odu 18210 df-proset 18217 df-poset 18236 df-lub 18267 df-glb 18268 df-ipo 18451 |
| This theorem is referenced by: ipoglb0 49239 mrelatglbALT 49241 toplatglb 49246 toplatmeet 49248 |
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