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Mirrors > Home > MPE Home > Th. List > latlem12 | Structured version Visualization version GIF version |
Description: An element is less than or equal to a meet iff the element is less than or equal to each argument of the meet. (Contributed by NM, 21-Oct-2011.) |
Ref | Expression |
---|---|
latmle.b | ⊢ 𝐵 = (Base‘𝐾) |
latmle.l | ⊢ ≤ = (le‘𝐾) |
latmle.m | ⊢ ∧ = (meet‘𝐾) |
Ref | Expression |
---|---|
latlem12 | ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 ≤ 𝑌 ∧ 𝑋 ≤ 𝑍) ↔ 𝑋 ≤ (𝑌 ∧ 𝑍))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | latmle.b | . 2 ⊢ 𝐵 = (Base‘𝐾) | |
2 | latmle.l | . 2 ⊢ ≤ = (le‘𝐾) | |
3 | latmle.m | . 2 ⊢ ∧ = (meet‘𝐾) | |
4 | latpos 16873 | . . 3 ⊢ (𝐾 ∈ Lat → 𝐾 ∈ Poset) | |
5 | 4 | adantr 480 | . 2 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → 𝐾 ∈ Poset) |
6 | simpr2 1061 | . 2 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → 𝑌 ∈ 𝐵) | |
7 | simpr3 1062 | . 2 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → 𝑍 ∈ 𝐵) | |
8 | simpr1 1060 | . 2 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → 𝑋 ∈ 𝐵) | |
9 | eqid 2610 | . . . 4 ⊢ (join‘𝐾) = (join‘𝐾) | |
10 | simpl 472 | . . . 4 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → 𝐾 ∈ Lat) | |
11 | 1, 9, 3, 10, 6, 7 | latcl2 16871 | . . 3 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → (〈𝑌, 𝑍〉 ∈ dom (join‘𝐾) ∧ 〈𝑌, 𝑍〉 ∈ dom ∧ )) |
12 | 11 | simprd 478 | . 2 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → 〈𝑌, 𝑍〉 ∈ dom ∧ ) |
13 | 1, 2, 3, 5, 6, 7, 8, 12 | meetle 16851 | 1 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑍 ∈ 𝐵)) → ((𝑋 ≤ 𝑌 ∧ 𝑋 ≤ 𝑍) ↔ 𝑋 ≤ (𝑌 ∧ 𝑍))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 ∧ w3a 1031 = wceq 1475 ∈ wcel 1977 〈cop 4131 class class class wbr 4583 dom cdm 5038 ‘cfv 5804 (class class class)co 6549 Basecbs 15695 lecple 15775 Posetcpo 16763 joincjn 16767 meetcmee 16768 Latclat 16868 |
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 ax-un 6847 |
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-ov 6552 df-oprab 6553 df-poset 16769 df-glb 16798 df-meet 16800 df-lat 16869 |
This theorem is referenced by: latleeqm1 16902 latmlem1 16904 latmidm 16909 latledi 16912 mod1ile 16928 oldmm1 33522 olm01 33541 cmtbr4N 33560 atnle 33622 atlatmstc 33624 hlrelat2 33707 cvrval5 33719 cvrexchlem 33723 2atjm 33749 atbtwn 33750 ps-2b 33786 2atm 33831 2llnm4 33874 2llnmeqat 33875 dalemcea 33964 dalem21 33998 dalem54 34030 dalem55 34031 dalem57 34033 2atm2atN 34089 2llnma1b 34090 cdlemblem 34097 dalawlem2 34176 dalawlem3 34177 dalawlem6 34180 dalawlem11 34185 dalawlem12 34186 lhpocnle 34320 lhpmcvr4N 34330 lhpat3 34350 4atexlemcnd 34376 lautm 34398 trlval3 34492 cdlemc5 34500 cdleme3 34542 cdleme7ga 34553 cdleme7 34554 cdleme11k 34573 cdleme16e 34587 cdleme16f 34588 cdlemednpq 34604 cdleme22aa 34645 cdleme22b 34647 cdleme22cN 34648 cdleme23c 34657 cdlemeg46req 34835 cdlemf2 34868 cdlemg10c 34945 cdlemg12f 34954 cdlemg17dALTN 34970 cdlemg19a 34989 cdlemg27b 35002 cdlemi 35126 cdlemk15 35161 cdlemk50 35258 dia2dimlem1 35371 dihopelvalcpre 35555 dihord5b 35566 dihmeetlem1N 35597 dihglblem5apreN 35598 dihglblem2N 35601 dihmeetlem3N 35612 |
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