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Mirrors > Home > MPE Home > Th. List > latmle1 | Structured version Visualization version GIF version |
Description: A meet is less than or equal to its first argument. (Contributed by NM, 21-Oct-2011.) |
Ref | Expression |
---|---|
latmle.b | ⊢ 𝐵 = (Base‘𝐾) |
latmle.l | ⊢ ≤ = (le‘𝐾) |
latmle.m | ⊢ ∧ = (meet‘𝐾) |
Ref | Expression |
---|---|
latmle1 | ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∧ 𝑌) ≤ 𝑋) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | latmle.b | . 2 ⊢ 𝐵 = (Base‘𝐾) | |
2 | latmle.l | . 2 ⊢ ≤ = (le‘𝐾) | |
3 | latmle.m | . 2 ⊢ ∧ = (meet‘𝐾) | |
4 | simp1 1134 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝐾 ∈ Lat) | |
5 | simp2 1135 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑋 ∈ 𝐵) | |
6 | simp3 1136 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 𝑌 ∈ 𝐵) | |
7 | eqid 2739 | . . . 4 ⊢ (join‘𝐾) = (join‘𝐾) | |
8 | 1, 7, 3, 4, 5, 6 | latcl2 18135 | . . 3 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (〈𝑋, 𝑌〉 ∈ dom (join‘𝐾) ∧ 〈𝑋, 𝑌〉 ∈ dom ∧ )) |
9 | 8 | simprd 495 | . 2 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → 〈𝑋, 𝑌〉 ∈ dom ∧ ) |
10 | 1, 2, 3, 4, 5, 6, 9 | lemeet1 18097 | 1 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∧ 𝑌) ≤ 𝑋) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1085 = wceq 1541 ∈ wcel 2109 〈cop 4572 class class class wbr 5078 dom cdm 5588 ‘cfv 6430 (class class class)co 7268 Basecbs 16893 lecple 16950 joincjn 18010 meetcmee 18011 Latclat 18130 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-rep 5213 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-ral 3070 df-rex 3071 df-reu 3072 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-id 5488 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-glb 18046 df-meet 18048 df-lat 18131 |
This theorem is referenced by: latleeqm1 18166 latmlem1 18168 latnlemlt 18171 latmidm 18173 latabs1 18174 latledi 18176 latmlej11 18177 oldmm1 37210 cmtbr3N 37247 cmtbr4N 37248 lecmtN 37249 cvrat4 37436 2llnmat 37517 llnmlplnN 37532 dalem3 37657 dalem27 37692 dalem54 37719 dalem55 37720 2lnat 37777 cdlema1N 37784 llnexchb2lem 37861 dalawlem1 37864 dalawlem6 37869 dalawlem11 37874 dalawlem12 37875 4atexlemunv 38059 4atexlemc 38062 4atexlemnclw 38063 4atexlemex2 38064 4atexlemcnd 38065 lautm 38087 trlval3 38180 cdlemeulpq 38213 cdleme3h 38228 cdleme4a 38232 cdleme9 38246 cdleme11g 38258 cdleme13 38265 cdleme16e 38275 cdlemednpq 38292 cdleme19b 38297 cdleme20e 38306 cdleme20j 38311 cdleme22cN 38335 cdleme22e 38337 cdleme22eALTN 38338 cdleme22g 38341 cdleme35b 38443 cdleme35f 38447 cdlemeg46vrg 38520 cdlemg11b 38635 cdlemg12f 38641 cdlemg19a 38676 cdlemg31a 38690 cdlemk12 38843 cdlemkole 38846 cdlemk12u 38865 cdlemk37 38907 dia2dimlem1 39057 dihopelvalcpre 39241 dihmeetlem1N 39283 dihglblem5apreN 39284 dihglblem2N 39287 dihmeetlem2N 39292 |
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