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| Mirrors > Home > MPE Home > Th. List > latlej1 | Structured version Visualization version GIF version | ||
| Description: A join's first argument is less than or equal to the join. (chub1 32028 analog.) (Contributed by NM, 17-Sep-2011.) |
| Ref | Expression |
|---|---|
| latlej.b | ⊢ 𝐵 = (Base‘𝐾) |
| latlej.l | ⊢ ≤ = (le‘𝐾) |
| latlej.j | ⊢ ∨ = (join‘𝐾) |
| Ref | Expression |
|---|---|
| latlej1 | ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋 ≤ (𝑋 ∨ 𝑌)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | latlej.b | . 2 ⊢ 𝐵 = (Base‘𝐾) | |
| 2 | latlej.l | . 2 ⊢ ≤ = (le‘𝐾) | |
| 3 | latlej.j | . 2 ⊢ ∨ = (join‘𝐾) | |
| 4 | simp1 1154 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝐾 ∈ Lat) | |
| 5 | simp2 1155 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋 ∈ 𝐵) | |
| 6 | simp3 1156 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑌 ∈ 𝐵) | |
| 7 | eqid 2760 | . . . 4 ⊢ (meet‘𝐾) = (meet‘𝐾) | |
| 8 | 1, 3, 7, 4, 5, 6 | latcl2 18557 | . . 3 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (〈𝑋, 𝑌〉 ∈ dom ∨ ∧ 〈𝑋, 𝑌〉 ∈ dom (meet‘𝐾))) |
| 9 | 8 | simpld 500 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 〈𝑋, 𝑌〉 ∈ dom ∨ ) |
| 10 | 1, 2, 3, 4, 5, 6, 9 | lejoin1 18503 | 1 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋 ≤ (𝑋 ∨ 𝑌)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 〈cop 4590 class class class wbr 5103 dom cdm 5648 ‘cfv 6528 (class class class)co 7409 Basecbs 17334 lecple 17382 joincjn 18432 meetcmee 18433 Latclat 18552 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5543 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-iota 6484 df-fun 6530 df-fn 6531 df-f 6532 df-f1 6533 df-fo 6534 df-f1o 6535 df-fv 6536 df-riota 7366 df-ov 7412 df-oprab 7413 df-lub 18465 df-join 18467 df-lat 18553 |
| This theorem is used by: latjlej1 18574 latnlej 18577 latnlej2 18580 latjidm 18583 latnle 18594 latabs2 18597 latmlej11 18599 latjass 18604 mod1ile 18614 lubun 18636 oldmm1 40188 olj01 40196 omllaw5N 40218 cvlexchb1 40301 cvlsupr2 40314 cvlsupr7 40319 hlatlej1 40346 hlrelat5N 40372 2atjm 40416 2llnmj 40531 lplnexllnN 40535 2llnjaN 40537 2llnm2N 40539 4atlem3a 40568 2lplnja 40590 2lplnm2N 40592 2lplnmj 40593 dalemply 40625 dalemsly 40626 dalem10 40644 dalem13 40647 dalem21 40665 dalem55 40698 2llnma1b 40757 cdlema1N 40762 elpaddn0 40771 paddasslem12 40802 paddasslem13 40803 pmapjoin 40823 dalawlem2 40843 dalawlem7 40848 dalawlem11 40852 dalawlem12 40853 lhpmcvr3 40996 lhpmcvr5N 40998 lhpmcvr6N 40999 lautj 41064 trljat1 41137 cdlemc1 41162 cdlemc4 41165 cdleme1 41198 cdleme8 41221 cdleme11g 41236 cdleme22e 41315 cdleme22eALTN 41316 cdleme23b 41321 cdleme23c 41322 cdleme27N 41340 cdleme30a 41349 cdleme35fnpq 41420 cdleme35b 41421 cdleme35c 41422 cdleme42h 41453 cdleme42i 41454 cdleme48bw 41473 cdlemg2fv2 41571 cdlemg7fvbwN 41578 cdlemg8b 41599 cdlemg11b 41613 trlcolem 41697 trljco 41711 cdlemi1 41789 cdlemk48 41921 cdlemn2 42166 dihjustlem 42187 dihord1 42189 dihord5apre 42233 dihglbcpreN 42271 dihmeetlem3N 42276 dihmeetlem11N 42288 |
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