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Mirrors > Home > MPE Home > Th. List > clatlem | Structured version Visualization version GIF version |
Description: Lemma for properties of a complete lattice. (Contributed by NM, 14-Sep-2011.) |
Ref | Expression |
---|---|
clatlem.b | ⊢ 𝐵 = (Base‘𝐾) |
clatlem.u | ⊢ 𝑈 = (lub‘𝐾) |
clatlem.g | ⊢ 𝐺 = (glb‘𝐾) |
Ref | Expression |
---|---|
clatlem | ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → ((𝑈‘𝑆) ∈ 𝐵 ∧ (𝐺‘𝑆) ∈ 𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clatlem.b | . . 3 ⊢ 𝐵 = (Base‘𝐾) | |
2 | clatlem.u | . . 3 ⊢ 𝑈 = (lub‘𝐾) | |
3 | simpl 472 | . . 3 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝐾 ∈ CLat) | |
4 | fvex 6113 | . . . . . . . 8 ⊢ (Base‘𝐾) ∈ V | |
5 | 1, 4 | eqeltri 2684 | . . . . . . 7 ⊢ 𝐵 ∈ V |
6 | 5 | elpw2 4755 | . . . . . 6 ⊢ (𝑆 ∈ 𝒫 𝐵 ↔ 𝑆 ⊆ 𝐵) |
7 | 6 | biimpri 217 | . . . . 5 ⊢ (𝑆 ⊆ 𝐵 → 𝑆 ∈ 𝒫 𝐵) |
8 | 7 | adantl 481 | . . . 4 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝑆 ∈ 𝒫 𝐵) |
9 | clatlem.g | . . . . . . . 8 ⊢ 𝐺 = (glb‘𝐾) | |
10 | 1, 2, 9 | isclat 16932 | . . . . . . 7 ⊢ (𝐾 ∈ CLat ↔ (𝐾 ∈ Poset ∧ (dom 𝑈 = 𝒫 𝐵 ∧ dom 𝐺 = 𝒫 𝐵))) |
11 | 10 | biimpi 205 | . . . . . 6 ⊢ (𝐾 ∈ CLat → (𝐾 ∈ Poset ∧ (dom 𝑈 = 𝒫 𝐵 ∧ dom 𝐺 = 𝒫 𝐵))) |
12 | 11 | adantr 480 | . . . . 5 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝐾 ∈ Poset ∧ (dom 𝑈 = 𝒫 𝐵 ∧ dom 𝐺 = 𝒫 𝐵))) |
13 | simpl 472 | . . . . . 6 ⊢ ((dom 𝑈 = 𝒫 𝐵 ∧ dom 𝐺 = 𝒫 𝐵) → dom 𝑈 = 𝒫 𝐵) | |
14 | 13 | adantl 481 | . . . . 5 ⊢ ((𝐾 ∈ Poset ∧ (dom 𝑈 = 𝒫 𝐵 ∧ dom 𝐺 = 𝒫 𝐵)) → dom 𝑈 = 𝒫 𝐵) |
15 | 12, 14 | syl 17 | . . . 4 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → dom 𝑈 = 𝒫 𝐵) |
16 | 8, 15 | eleqtrrd 2691 | . . 3 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝑆 ∈ dom 𝑈) |
17 | 1, 2, 3, 16 | lubcl 16808 | . 2 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝑈‘𝑆) ∈ 𝐵) |
18 | 12 | simprrd 793 | . . . 4 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → dom 𝐺 = 𝒫 𝐵) |
19 | 8, 18 | eleqtrrd 2691 | . . 3 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝑆 ∈ dom 𝐺) |
20 | 1, 9, 3, 19 | glbcl 16821 | . 2 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝐺‘𝑆) ∈ 𝐵) |
21 | 17, 20 | jca 553 | 1 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → ((𝑈‘𝑆) ∈ 𝐵 ∧ (𝐺‘𝑆) ∈ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 = wceq 1475 ∈ wcel 1977 Vcvv 3173 ⊆ wss 3540 𝒫 cpw 4108 dom cdm 5038 ‘cfv 5804 Basecbs 15695 Posetcpo 16763 lubclub 16765 glbcglb 16766 CLatccla 16930 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-lub 16797 df-glb 16798 df-clat 16931 |
This theorem is referenced by: clatlubcl 16935 clatglbcl 16937 |
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