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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 18445 is in quantified form. mrelatglb 18592 could potentially be shortened using this. See mrelatglbALT 49617. (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 2762 | . 2 ⊢ (le‘𝐼) = (le‘𝐼) | |
| 2 | ipolub.f | . . 3 ⊢ (𝜑 → 𝐹 ∈ 𝑉) | |
| 3 | ipolub.i | . . . 4 ⊢ 𝐼 = (toInc‘𝐹) | |
| 4 | 3 | ipobas 18563 | . . 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 18568 | . . 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 5104 | . . 3 ⊢ (𝑦 = 𝑣 → (𝑇(le‘𝐼)𝑦 ↔ 𝑇(le‘𝐼)𝑣)) | |
| 12 | ipoglbdm.t | . . . . . . 7 ⊢ (𝜑 → 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) | |
| 13 | unilbeu 49606 | . . . . . . . 8 ⊢ (𝑇 ∈ 𝐹 → ((𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇)) ↔ 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆})) | |
| 14 | 13 | biimpar 481 | . . . . . . 7 ⊢ ((𝑇 ∈ 𝐹 ∧ 𝑇 = ∪ {𝑥 ∈ 𝐹 ∣ 𝑥 ⊆ ∩ 𝑆}) → (𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
| 15 | 10, 12, 14 | syl2anc 593 | . . . . . 6 ⊢ (𝜑 → (𝑇 ⊆ ∩ 𝑆 ∧ ∀𝑧 ∈ 𝐹 (𝑧 ⊆ ∩ 𝑆 → 𝑧 ⊆ 𝑇))) |
| 16 | 3, 2, 9, 1 | ipoglblem 49610 | . . . . . . 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 697 | . . . . . 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 234 | . . . . 5 ⊢ (𝜑 → (∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦 ∧ ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇))) |
| 19 | 18 | simpld 498 | . . . 4 ⊢ (𝜑 → ∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦) |
| 20 | 19 | adantr 484 | . . 3 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑆) → ∀𝑦 ∈ 𝑆 𝑇(le‘𝐼)𝑦) |
| 21 | simpr 488 | . . 3 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑆) → 𝑣 ∈ 𝑆) | |
| 22 | 11, 20, 21 | rspcdva 3582 | . 2 ⊢ ((𝜑 ∧ 𝑣 ∈ 𝑆) → 𝑇(le‘𝐼)𝑣) |
| 23 | breq1 5103 | . . . . . . 7 ⊢ (𝑧 = 𝑤 → (𝑧(le‘𝐼)𝑦 ↔ 𝑤(le‘𝐼)𝑦)) | |
| 24 | 23 | ralbidv 3185 | . . . . . 6 ⊢ (𝑧 = 𝑤 → (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 ↔ ∀𝑦 ∈ 𝑆 𝑤(le‘𝐼)𝑦)) |
| 25 | breq2 5104 | . . . . . . 7 ⊢ (𝑦 = 𝑣 → (𝑤(le‘𝐼)𝑦 ↔ 𝑤(le‘𝐼)𝑣)) | |
| 26 | 25 | cbvralvw 3240 | . . . . . 6 ⊢ (∀𝑦 ∈ 𝑆 𝑤(le‘𝐼)𝑦 ↔ ∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣) |
| 27 | 24, 26 | bitrdi 289 | . . . . 5 ⊢ (𝑧 = 𝑤 → (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 ↔ ∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣)) |
| 28 | breq1 5103 | . . . . 5 ⊢ (𝑧 = 𝑤 → (𝑧(le‘𝐼)𝑇 ↔ 𝑤(le‘𝐼)𝑇)) | |
| 29 | 27, 28 | imbi12d 346 | . . . 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 499 | . . . . 5 ⊢ (𝜑 → ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇)) |
| 31 | 30 | adantr 484 | . . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → ∀𝑧 ∈ 𝐹 (∀𝑦 ∈ 𝑆 𝑧(le‘𝐼)𝑦 → 𝑧(le‘𝐼)𝑇)) |
| 32 | simpr 488 | . . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → 𝑤 ∈ 𝐹) | |
| 33 | 29, 31, 32 | rspcdva 3582 | . . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹) → (∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣 → 𝑤(le‘𝐼)𝑇)) |
| 34 | 33 | 3impia 1130 | . 2 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐹 ∧ ∀𝑣 ∈ 𝑆 𝑤(le‘𝐼)𝑣) → 𝑤(le‘𝐼)𝑇) |
| 35 | 1, 5, 6, 8, 9, 10, 22, 34 | posglbdg 18445 | 1 ⊢ (𝜑 → (𝐺‘𝑆) = 𝑇) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 = wceq 1560 ∈ wcel 2142 ∀wral 3076 {crab 3414 ⊆ wss 3904 ∪ cuni 4865 ∩ cint 4905 class class class wbr 5100 ‘cfv 6521 Basecbs 17245 lecple 17293 Posetcpo 18339 glbcglb 18342 toInccipo 18559 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-er 8678 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-nn 12211 df-2 12280 df-3 12281 df-4 12282 df-5 12283 df-6 12284 df-7 12285 df-8 12286 df-9 12287 df-n0 12482 df-z 12569 df-dec 12689 df-uz 12840 df-fz 13513 df-struct 17183 df-sets 17200 df-slot 17218 df-ndx 17230 df-base 17246 df-tset 17305 df-ple 17306 df-ocomp 17307 df-odu 18319 df-proset 18326 df-poset 18345 df-lub 18376 df-glb 18377 df-ipo 18560 |
| This theorem is referenced by: ipoglb0 49615 mrelatglbALT 49617 toplatglb 49622 toplatmeet 49624 |
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