dihmeetbclemN - Mathbox for Norm Megill

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Theorem dihmeetbclemN 37095

Description: Lemma for isomorphism H of a lattice meet. (Contributed by NM, 30-Mar-2014.) (New usage is discouraged.)

**Hypotheses**
Ref	Expression
dihmeetc.b	⊢ 𝐵 = (Base‘𝐾)
dihmeetc.l	⊢ ≤ = (le‘𝐾)
dihmeetc.m	⊢ ∧ = (meet‘𝐾)
dihmeetc.h	⊢ 𝐻 = (LHyp‘𝐾)
dihmeetc.i	⊢ 𝐼 = ((DIsoH‘𝐾)‘𝑊)

**Assertion**
Ref	Expression
dihmeetbclemN	⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝐼‘(𝑋 ∧ 𝑌)) = (((𝐼‘𝑋) ∩ (𝐼‘𝑌)) ∩ (𝐼‘𝑊)))

**Proof of Theorem dihmeetbclemN**
Step	Hyp	Ref	Expression
1		simp3 1133	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝑋 ∧ 𝑌) ≤ 𝑊)
2		simp1l 1240	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝐾 ∈ HL)
3		hllat 35153	. . . . . . . 8 ⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat)
4	2, 3	syl 17	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝐾 ∈ Lat)
5		simp2l 1242	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝑋 ∈ 𝐵)
6		simp2r 1243	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝑌 ∈ 𝐵)
7		dihmeetc.b	. . . . . . . . 9 ⊢ 𝐵 = (Base‘𝐾)
8		dihmeetc.m	. . . . . . . . 9 ⊢ ∧ = (meet‘𝐾)
9	7, 8	latmcl 17253	. . . . . . . 8 ⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑋 ∧ 𝑌) ∈ 𝐵)
10	4, 5, 6, 9	syl3anc 1477	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝑋 ∧ 𝑌) ∈ 𝐵)
11		simp1r 1241	. . . . . . . 8 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝑊 ∈ 𝐻)
12		dihmeetc.h	. . . . . . . . 9 ⊢ 𝐻 = (LHyp‘𝐾)
13	7, 12	lhpbase 35787	. . . . . . . 8 ⊢ (𝑊 ∈ 𝐻 → 𝑊 ∈ 𝐵)
14	11, 13	syl 17	. . . . . . 7 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝑊 ∈ 𝐵)
15		dihmeetc.l	. . . . . . . 8 ⊢ ≤ = (le‘𝐾)
16	7, 15, 8	latleeqm1 17280	. . . . . . 7 ⊢ ((𝐾 ∈ Lat ∧ (𝑋 ∧ 𝑌) ∈ 𝐵 ∧ 𝑊 ∈ 𝐵) → ((𝑋 ∧ 𝑌) ≤ 𝑊 ↔ ((𝑋 ∧ 𝑌) ∧ 𝑊) = (𝑋 ∧ 𝑌)))
17	4, 10, 14, 16	syl3anc 1477	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → ((𝑋 ∧ 𝑌) ≤ 𝑊 ↔ ((𝑋 ∧ 𝑌) ∧ 𝑊) = (𝑋 ∧ 𝑌)))
18	1, 17	mpbid 222	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → ((𝑋 ∧ 𝑌) ∧ 𝑊) = (𝑋 ∧ 𝑌))
19		hlol 35151	. . . . . . 7 ⊢ (𝐾 ∈ HL → 𝐾 ∈ OL)
20	2, 19	syl 17	. . . . . 6 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝐾 ∈ OL)
21	7, 8	latmassOLD 35019	. . . . . 6 ⊢ ((𝐾 ∈ OL ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵 ∧ 𝑊 ∈ 𝐵)) → ((𝑋 ∧ 𝑌) ∧ 𝑊) = (𝑋 ∧ (𝑌 ∧ 𝑊)))
22	20, 5, 6, 14, 21	syl13anc 1479	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → ((𝑋 ∧ 𝑌) ∧ 𝑊) = (𝑋 ∧ (𝑌 ∧ 𝑊)))
23	18, 22	eqtr3d 2796	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝑋 ∧ 𝑌) = (𝑋 ∧ (𝑌 ∧ 𝑊)))
24	23	fveq2d 6356	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝐼‘(𝑋 ∧ 𝑌)) = (𝐼‘(𝑋 ∧ (𝑌 ∧ 𝑊))))
25		simp1 1131	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
26	7, 8	latmcl 17253	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ 𝑌 ∈ 𝐵 ∧ 𝑊 ∈ 𝐵) → (𝑌 ∧ 𝑊) ∈ 𝐵)
27	4, 6, 14, 26	syl3anc 1477	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝑌 ∧ 𝑊) ∈ 𝐵)
28	7, 15, 8	latmle2 17278	. . . . 5 ⊢ ((𝐾 ∈ Lat ∧ 𝑌 ∈ 𝐵 ∧ 𝑊 ∈ 𝐵) → (𝑌 ∧ 𝑊) ≤ 𝑊)
29	4, 6, 14, 28	syl3anc 1477	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝑌 ∧ 𝑊) ≤ 𝑊)
30		dihmeetc.i	. . . . 5 ⊢ 𝐼 = ((DIsoH‘𝐾)‘𝑊)
31	7, 15, 8, 12, 30	dihmeetbN 37094	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑋 ∈ 𝐵 ∧ ((𝑌 ∧ 𝑊) ∈ 𝐵 ∧ (𝑌 ∧ 𝑊) ≤ 𝑊)) → (𝐼‘(𝑋 ∧ (𝑌 ∧ 𝑊))) = ((𝐼‘𝑋) ∩ (𝐼‘(𝑌 ∧ 𝑊))))
32	25, 5, 27, 29, 31	syl112anc 1481	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝐼‘(𝑋 ∧ (𝑌 ∧ 𝑊))) = ((𝐼‘𝑋) ∩ (𝐼‘(𝑌 ∧ 𝑊))))
33	7, 15	latref 17254	. . . . . 6 ⊢ ((𝐾 ∈ Lat ∧ 𝑊 ∈ 𝐵) → 𝑊 ≤ 𝑊)
34	4, 14, 33	syl2anc 696	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → 𝑊 ≤ 𝑊)
35	7, 15, 8, 12, 30	dihmeetbN 37094	. . . . 5 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ 𝑌 ∈ 𝐵 ∧ (𝑊 ∈ 𝐵 ∧ 𝑊 ≤ 𝑊)) → (𝐼‘(𝑌 ∧ 𝑊)) = ((𝐼‘𝑌) ∩ (𝐼‘𝑊)))
36	25, 6, 14, 34, 35	syl112anc 1481	. . . 4 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝐼‘(𝑌 ∧ 𝑊)) = ((𝐼‘𝑌) ∩ (𝐼‘𝑊)))
37	36	ineq2d 3957	. . 3 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → ((𝐼‘𝑋) ∩ (𝐼‘(𝑌 ∧ 𝑊))) = ((𝐼‘𝑋) ∩ ((𝐼‘𝑌) ∩ (𝐼‘𝑊))))
38	24, 32, 37	3eqtrd 2798	. 2 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝐼‘(𝑋 ∧ 𝑌)) = ((𝐼‘𝑋) ∩ ((𝐼‘𝑌) ∩ (𝐼‘𝑊))))
39		inass 3966	. 2 ⊢ (((𝐼‘𝑋) ∩ (𝐼‘𝑌)) ∩ (𝐼‘𝑊)) = ((𝐼‘𝑋) ∩ ((𝐼‘𝑌) ∩ (𝐼‘𝑊)))
40	38, 39	syl6eqr 2812	1 ⊢ (((𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻) ∧ (𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ (𝑋 ∧ 𝑌) ≤ 𝑊) → (𝐼‘(𝑋 ∧ 𝑌)) = (((𝐼‘𝑋) ∩ (𝐼‘𝑌)) ∩ (𝐼‘𝑊)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 196 ∧ wa 383 ∧ w3a 1072 = wceq 1632 ∈ wcel 2139 ∩ cin 3714 class class class wbr 4804 ‘cfv 6049 (class class class)co 6813 Basecbs 16059 lecple 16150 meetcmee 17146 Latclat 17246 OLcol 34964 HLchlt 35140 LHypclh 35773 DIsoHcdih 37019

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1871 ax-4 1886 ax-5 1988 ax-6 2054 ax-7 2090 ax-8 2141 ax-9 2148 ax-10 2168 ax-11 2183 ax-12 2196 ax-13 2391 ax-ext 2740 ax-rep 4923 ax-sep 4933 ax-nul 4941 ax-pow 4992 ax-pr 5055 ax-un 7114 ax-cnex 10184 ax-resscn 10185 ax-1cn 10186 ax-icn 10187 ax-addcl 10188 ax-addrcl 10189 ax-mulcl 10190 ax-mulrcl 10191 ax-mulcom 10192 ax-addass 10193 ax-mulass 10194 ax-distr 10195 ax-i2m1 10196 ax-1ne0 10197 ax-1rid 10198 ax-rnegex 10199 ax-rrecex 10200 ax-cnre 10201 ax-pre-lttri 10202 ax-pre-lttrn 10203 ax-pre-ltadd 10204 ax-pre-mulgt0 10205 ax-riotaBAD 34742

This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-3or 1073 df-3an 1074 df-tru 1635 df-fal 1638 df-ex 1854 df-nf 1859 df-sb 2047 df-eu 2611 df-mo 2612 df-clab 2747 df-cleq 2753 df-clel 2756 df-nfc 2891 df-ne 2933 df-nel 3036 df-ral 3055 df-rex 3056 df-reu 3057 df-rmo 3058 df-rab 3059 df-v 3342 df-sbc 3577 df-csb 3675 df-dif 3718 df-un 3720 df-in 3722 df-ss 3729 df-pss 3731 df-nul 4059 df-if 4231 df-pw 4304 df-sn 4322 df-pr 4324 df-tp 4326 df-op 4328 df-uni 4589 df-int 4628 df-iun 4674 df-iin 4675 df-br 4805 df-opab 4865 df-mpt 4882 df-tr 4905 df-id 5174 df-eprel 5179 df-po 5187 df-so 5188 df-fr 5225 df-we 5227 df-xp 5272 df-rel 5273 df-cnv 5274 df-co 5275 df-dm 5276 df-rn 5277 df-res 5278 df-ima 5279 df-pred 5841 df-ord 5887 df-on 5888 df-lim 5889 df-suc 5890 df-iota 6012 df-fun 6051 df-fn 6052 df-f 6053 df-f1 6054 df-fo 6055 df-f1o 6056 df-fv 6057 df-riota 6774 df-ov 6816 df-oprab 6817 df-mpt2 6818 df-om 7231 df-1st 7333 df-2nd 7334 df-tpos 7521 df-undef 7568 df-wrecs 7576 df-recs 7637 df-rdg 7675 df-1o 7729 df-oadd 7733 df-er 7911 df-map 8025 df-en 8122 df-dom 8123 df-sdom 8124 df-fin 8125 df-pnf 10268 df-mnf 10269 df-xr 10270 df-ltxr 10271 df-le 10272 df-sub 10460 df-neg 10461 df-nn 11213 df-2 11271 df-3 11272 df-4 11273 df-5 11274 df-6 11275 df-n0 11485 df-z 11570 df-uz 11880 df-fz 12520 df-struct 16061 df-ndx 16062 df-slot 16063 df-base 16065 df-sets 16066 df-ress 16067 df-plusg 16156 df-mulr 16157 df-sca 16159 df-vsca 16160 df-0g 16304 df-preset 17129 df-poset 17147 df-plt 17159 df-lub 17175 df-glb 17176 df-join 17177 df-meet 17178 df-p0 17240 df-p1 17241 df-lat 17247 df-clat 17309 df-mgm 17443 df-sgrp 17485 df-mnd 17496 df-submnd 17537 df-grp 17626 df-minusg 17627 df-sbg 17628 df-subg 17792 df-cntz 17950 df-lsm 18251 df-cmn 18395 df-abl 18396 df-mgp 18690 df-ur 18702 df-ring 18749 df-oppr 18823 df-dvdsr 18841 df-unit 18842 df-invr 18872 df-dvr 18883 df-drng 18951 df-lmod 19067 df-lss 19135 df-lsp 19174 df-lvec 19305 df-oposet 34966 df-ol 34968 df-oml 34969 df-covers 35056 df-ats 35057 df-atl 35088 df-cvlat 35112 df-hlat 35141 df-llines 35287 df-lplanes 35288 df-lvols 35289 df-lines 35290 df-psubsp 35292 df-pmap 35293 df-padd 35585 df-lhyp 35777 df-laut 35778 df-ldil 35893 df-ltrn 35894 df-trl 35949 df-tendo 36545 df-edring 36547 df-disoa 36820 df-dvech 36870 df-dib 36930 df-dic 36964 df-dih 37020

This theorem is referenced by: (None)

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