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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 487 | . . 3 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝐾 ∈ CLat) | |
| 4 | 1 | fvexi 6897 | . . . . . 6 ⊢ 𝐵 ∈ V |
| 5 | 4 | elpw2 5306 | . . . . 5 ⊢ (𝑆 ∈ 𝒫 𝐵 ↔ 𝑆 ⊆ 𝐵) |
| 6 | 5 | bilanri 511 | . . . 4 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝑆 ∈ 𝒫 𝐵) |
| 7 | clatlem.g | . . . . . . 7 ⊢ 𝐺 = (glb‘𝐾) | |
| 8 | 1, 2, 7 | isclat 18557 | . . . . . 6 ⊢ (𝐾 ∈ CLat ↔ (𝐾 ∈ Poset ∧ (dom 𝑈 = 𝒫 𝐵 ∧ dom 𝐺 = 𝒫 𝐵))) |
| 9 | 8 | birani 508 | . . . . 5 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝐾 ∈ Poset ∧ (dom 𝑈 = 𝒫 𝐵 ∧ dom 𝐺 = 𝒫 𝐵))) |
| 10 | 9 | simprld 783 | . . . 4 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → dom 𝑈 = 𝒫 𝐵) |
| 11 | 6, 10 | eleqtrrd 2866 | . . 3 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝑆 ∈ dom 𝑈) |
| 12 | 1, 2, 3, 11 | lubcl 18412 | . 2 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝑈‘𝑆) ∈ 𝐵) |
| 13 | 9 | simprrd 785 | . . . 4 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → dom 𝐺 = 𝒫 𝐵) |
| 14 | 6, 13 | eleqtrrd 2866 | . . 3 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → 𝑆 ∈ dom 𝐺) |
| 15 | 1, 7, 3, 14 | glbcl 18425 | . 2 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → (𝐺‘𝑆) ∈ 𝐵) |
| 16 | 12, 15 | jca 520 | 1 ⊢ ((𝐾 ∈ CLat ∧ 𝑆 ⊆ 𝐵) → ((𝑈‘𝑆) ∈ 𝐵 ∧ (𝐺‘𝑆) ∈ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1570 ∈ wcel 2143 ⊆ wss 3906 𝒫 cpw 4563 dom cdm 5663 ‘cfv 6538 Basecbs 17270 Posetcpo 18364 lubclub 18366 glbcglb 18367 CLatccla 18555 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7369 df-lub 18401 df-glb 18402 df-clat 18556 |
| This theorem is referenced by: clatlubcl 18560 clatglbcl 18562 |
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