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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 18755 | . 2 ⊢ (𝐽 ∈ Top → 𝐽 = (Base‘𝐼)) |
| 3 | eqidd 2764 | . 2 ⊢ (𝐽 ∈ Top → (lub‘𝐼) = (lub‘𝐼)) | |
| 4 | eqidd 2764 | . 2 ⊢ (𝐽 ∈ Top → (glb‘𝐼) = (glb‘𝐼)) | |
| 5 | 1 | ipopos 18760 | . . 3 ⊢ 𝐼 ∈ Poset |
| 6 | 5 | a1i 11 | . 2 ⊢ (𝐽 ∈ Top → 𝐼 ∈ Poset) |
| 7 | uniopn 23270 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ 𝑥 ∈ 𝐽) | |
| 8 | simpl 488 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝐽 ∈ Top) | |
| 9 | simpr 490 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝑥 ⊆ 𝐽) | |
| 10 | eqidd 2764 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (lub‘𝐼) = (lub‘𝐼)) | |
| 11 | intmin 4933 | . . . . . 6 ⊢ (∪ 𝑥 ∈ 𝐽 → ∩ {𝑦 ∈ 𝐽 ∣ ∪ 𝑥 ⊆ 𝑦} = ∪ 𝑥) | |
| 12 | 11 | eqcomd 2769 | . . . . 5 ⊢ (∪ 𝑥 ∈ 𝐽 → ∪ 𝑥 = ∩ {𝑦 ∈ 𝐽 ∣ ∪ 𝑥 ⊆ 𝑦}) |
| 13 | 7, 12 | syl 18 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ 𝑥 = ∩ {𝑦 ∈ 𝐽 ∣ ∪ 𝑥 ⊆ 𝑦}) |
| 14 | 1, 8, 9, 10, 13 | ipolubdm 50432 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (𝑥 ∈ dom (lub‘𝐼) ↔ ∪ 𝑥 ∈ 𝐽)) |
| 15 | 7, 14 | mpbird 260 | . 2 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝑥 ∈ dom (lub‘𝐼)) |
| 16 | ssrab2 4008 | . . . 4 ⊢ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ⊆ 𝐽 | |
| 17 | uniopn 23270 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ⊆ 𝐽) → ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ∈ 𝐽) | |
| 18 | 8, 16, 17 | sylancl 598 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ∈ 𝐽) |
| 19 | eqidd 2764 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (glb‘𝐼) = (glb‘𝐼)) | |
| 20 | eqidd 2764 | . . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} = ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥}) | |
| 21 | 1, 8, 9, 19, 20 | ipoglbdm 50435 | . . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → (𝑥 ∈ dom (glb‘𝐼) ↔ ∪ {𝑦 ∈ 𝐽 ∣ 𝑦 ⊆ ∩ 𝑥} ∈ 𝐽)) |
| 22 | 18, 21 | mpbird 260 | . 2 ⊢ ((𝐽 ∈ Top ∧ 𝑥 ⊆ 𝐽) → 𝑥 ∈ dom (glb‘𝐼)) |
| 23 | 2, 3, 4, 6, 15, 22 | isclatd 50428 | 1 ⊢ (𝐽 ∈ Top → 𝐼 ∈ CLat) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 {crab 3416 ⊆ wss 3900 ∪ cuni 4872 ∩ cint 4912 dom cdm 5658 ‘cfv 6566 Posetcpo 18531 lubclub 18533 glbcglb 18534 CLatccla 18722 toInccipo 18751 Topctop 23266 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-int 4913 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-1st 8035 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 df-9 12452 df-n0 12647 df-z 12734 df-dec 12855 df-uz 13006 df-fz 13680 df-struct 17369 df-slot 17404 df-ndx 17416 df-base 17432 df-tset 17492 df-ple 17493 df-ocomp 17494 df-proset 18518 df-poset 18537 df-lub 18568 df-glb 18569 df-clat 18723 df-ipo 18752 df-top 23267 |
| This theorem is used by: topdlat 50449 |
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