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| Mirrors > Home > MPE Home > Th. List > Mathboxes > topclat | Structured version Visualization version GIF version | ||
| Description: A topology is a complete lattice under inclusion. (Contributed by Zhi Wang, 30-Sep-2024.) |
| Ref | Expression |
|---|---|
| topclat.i | ⊢ 𝐼 = (toInc‘𝐽) |
| Ref | Expression |
|---|---|
| topclat | ⊢ (𝐽 ∈ Top → 𝐼 ∈ CLat) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | topclat.i | . . 3 ⊢ 𝐼 = (toInc‘𝐽) | |
| 2 | 1 | ipobas 18466 | . 2 ⊢ (𝐽 ∈ Top → 𝐽 = (Base‘𝐼)) |
| 3 | eqidd 2730 | . 2 ⊢ (𝐽 ∈ Top → (lub‘𝐼) = (lub‘𝐼)) | |
| 4 | eqidd 2730 | . 2 ⊢ (𝐽 ∈ Top → (glb‘𝐼) = (glb‘𝐼)) | |
| 5 | 1 | ipopos 18471 | . . 3 ⊢ 𝐼 ∈ Poset |
| 6 | 5 | a1i 11 | . 2 ⊢ (𝐽 ∈ Top → 𝐼 ∈ Poset) |
| 7 | uniopn 22760 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ 𝑥 ∈ 𝐽) | |
| 8 | simpl 482 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝐽 ∈ Top) | |
| 9 | simpr 484 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝑥 ⊆ 𝐽) | |
| 10 | eqidd 2730 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (lub‘𝐼) = (lub‘𝐼)) | |
| 11 | intmin 4928 | . . . . . 6 ⊢ (∪ 𝑥 ∈ 𝐽 → ∩ {𝑦 ∈ 𝐽 ∣ ∪ 𝑥 ⊆ 𝑦} = ∪ 𝑥) | |
| 12 | 11 | eqcomd 2735 | . . . . 5 ⊢ (∪ 𝑥 ∈ 𝐽 → ∪ 𝑥 = ∩ {𝑦 ∈ 𝐽 ∣ ∪ 𝑥 ⊆ 𝑦}) |
| 13 | 7, 12 | syl 17 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ 𝑥 = ∩ {𝑦 ∈ 𝐽 ∣ ∪ 𝑥 ⊆ 𝑦}) |
| 14 | 1, 8, 9, 10, 13 | ipolubdm 48948 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (𝑥 ∈ dom (lub‘𝐼) ↔ ∪ 𝑥 ∈ 𝐽)) |
| 15 | 7, 14 | mpbird 257 | . 2 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝑥 ∈ dom (lub‘𝐼)) |
| 16 | ssrab2 4039 | . . . 4 ⊢ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ⊆ 𝐽 | |
| 17 | uniopn 22760 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ⊆ 𝐽) → ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ∈ 𝐽) | |
| 18 | 8, 16, 17 | sylancl 586 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ∈ 𝐽) |
| 19 | eqidd 2730 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (glb‘𝐼) = (glb‘𝐼)) | |
| 20 | eqidd 2730 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} = ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥}) | |
| 21 | 1, 8, 9, 19, 20 | ipoglbdm 48951 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (𝑥 ∈ dom (glb‘𝐼) ↔ ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ∈ 𝐽)) |
| 22 | 18, 21 | mpbird 257 | . 2 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝑥 ∈ dom (glb‘𝐼)) |
| 23 | 2, 3, 4, 6, 15, 22 | isclatd 48944 | 1 ⊢ (𝐽 ∈ Top → 𝐼 ∈ CLat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2109 {crab 3402 ⊆ wss 3911 ∪ cuni 4867 ∩ cint 4906 dom cdm 5631 ‘cfv 6499 Posetcpo 18244 lubclub 18246 glbcglb 18247 CLatccla 18433 toInccipo 18462 Topctop 22756 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5229 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-int 4907 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-1st 7947 df-2nd 7948 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-1o 8411 df-er 8648 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-nn 12163 df-2 12225 df-3 12226 df-4 12227 df-5 12228 df-6 12229 df-7 12230 df-8 12231 df-9 12232 df-n0 12419 df-z 12506 df-dec 12626 df-uz 12770 df-fz 13445 df-struct 17093 df-slot 17128 df-ndx 17140 df-base 17156 df-tset 17215 df-ple 17216 df-ocomp 17217 df-proset 18231 df-poset 18250 df-lub 18281 df-glb 18282 df-clat 18434 df-ipo 18463 df-top 22757 |
| This theorem is referenced by: topdlat 48965 |
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