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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 32109 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 18610 | . . 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 18556 | 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 1569 ∈ wcel 2144 〈cop 4589 class class class wbr 5102 dom cdm 5650 ‘cfv 6538 (class class class)co 7420 Basecbs 17387 lecple 17435 joincjn 18485 meetcmee 18486 Latclat 18605 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 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 7377 df-ov 7423 df-oprab 7424 df-lub 18518 df-join 18520 df-lat 18606 |
| This theorem is used by: latjlej1 18627 latnlej 18630 latnlej2 18633 latjidm 18636 latnle 18647 latabs2 18650 latmlej11 18652 latjass 18657 mod1ile 18667 lubun 18689 oldmm1 40275 olj01 40283 omllaw5N 40305 cvlexchb1 40388 cvlsupr2 40401 cvlsupr7 40406 hlatlej1 40433 hlrelat5N 40459 2atjm 40503 2llnmj 40618 lplnexllnN 40622 2llnjaN 40624 2llnm2N 40626 4atlem3a 40655 2lplnja 40677 2lplnm2N 40679 2lplnmj 40680 dalemply 40712 dalemsly 40713 dalem10 40731 dalem13 40734 dalem21 40752 dalem55 40785 2llnma1b 40844 cdlema1N 40849 elpaddn0 40858 paddasslem12 40889 paddasslem13 40890 pmapjoin 40910 dalawlem2 40930 dalawlem7 40935 dalawlem11 40939 dalawlem12 40940 lhpmcvr3 41083 lhpmcvr5N 41085 lhpmcvr6N 41086 lautj 41151 trljat1 41224 cdlemc1 41249 cdlemc4 41252 cdleme1 41285 cdleme8 41308 cdleme11g 41323 cdleme22e 41402 cdleme22eALTN 41403 cdleme23b 41408 cdleme23c 41409 cdleme27N 41427 cdleme30a 41436 cdleme35fnpq 41507 cdleme35b 41508 cdleme35c 41509 cdleme42h 41540 cdleme42i 41541 cdleme48bw 41560 cdlemg2fv2 41658 cdlemg7fvbwN 41665 cdlemg8b 41686 cdlemg11b 41700 trlcolem 41784 trljco 41798 cdlemi1 41876 cdlemk48 42008 cdlemn2 42253 dihjustlem 42274 dihord1 42276 dihord5apre 42320 dihglbcpreN 42358 dihmeetlem3N 42363 dihmeetlem11N 42375 |
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