mapdin - Mathbox for Norm Megill

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Theorem mapdin 41861

Description: Subspace intersection is preserved by the map defined by df-mapd 41824. Part of property (e) in [Baer] p. 40. (Contributed by NM, 12-Apr-2015.)

**Hypotheses**
Ref	Expression
mapdin.h	⊢ 𝐻 = (LHyp‘𝐾)
mapdin.m	⊢ 𝑀 = ((mapd‘𝐾)‘𝑊)
mapdin.u	⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊)
mapdin.s	⊢ 𝑆 = (LSubSp‘𝑈)
mapdin.k	⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
mapdin.x	⊢ (𝜑 → 𝑋 ∈ 𝑆)
mapdin.y	⊢ (𝜑 → 𝑌 ∈ 𝑆)

**Assertion**
Ref	Expression
mapdin	⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) = ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))

**Proof of Theorem mapdin**
Step	Hyp	Ref	Expression
1		inss1 4187	. . . 4 ⊢ (𝑋 ∩ 𝑌) ⊆ 𝑋
2		mapdin.h	. . . . 5 ⊢ 𝐻 = (LHyp‘𝐾)
3		mapdin.u	. . . . 5 ⊢ 𝑈 = ((DVecH‘𝐾)‘𝑊)
4		mapdin.s	. . . . 5 ⊢ 𝑆 = (LSubSp‘𝑈)
5		mapdin.m	. . . . 5 ⊢ 𝑀 = ((mapd‘𝐾)‘𝑊)
6		mapdin.k	. . . . 5 ⊢ (𝜑 → (𝐾 ∈ HL ∧ 𝑊 ∈ 𝐻))
7	2, 3, 6	dvhlmod 41309	. . . . . 6 ⊢ (𝜑 → 𝑈 ∈ LMod)
8		mapdin.x	. . . . . 6 ⊢ (𝜑 → 𝑋 ∈ 𝑆)
9		mapdin.y	. . . . . 6 ⊢ (𝜑 → 𝑌 ∈ 𝑆)
10	4	lssincl 20914	. . . . . 6 ⊢ ((𝑈 ∈ LMod ∧ 𝑋 ∈ 𝑆 ∧ 𝑌 ∈ 𝑆) → (𝑋 ∩ 𝑌) ∈ 𝑆)
11	7, 8, 9, 10	syl3anc 1373	. . . . 5 ⊢ (𝜑 → (𝑋 ∩ 𝑌) ∈ 𝑆)
12	2, 3, 4, 5, 6, 11, 8	mapdord 41837	. . . 4 ⊢ (𝜑 → ((𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑋) ↔ (𝑋 ∩ 𝑌) ⊆ 𝑋))
13	1, 12	mpbiri 258	. . 3 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑋))
14		inss2 4188	. . . 4 ⊢ (𝑋 ∩ 𝑌) ⊆ 𝑌
15	2, 3, 4, 5, 6, 11, 9	mapdord 41837	. . . 4 ⊢ (𝜑 → ((𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑌) ↔ (𝑋 ∩ 𝑌) ⊆ 𝑌))
16	14, 15	mpbiri 258	. . 3 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑌))
17	13, 16	ssind 4191	. 2 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) ⊆ ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))
18		eqid 2734	. . . . 5 ⊢ ((LCDual‘𝐾)‘𝑊) = ((LCDual‘𝐾)‘𝑊)
19		eqid 2734	. . . . . . 7 ⊢ (LSubSp‘((LCDual‘𝐾)‘𝑊)) = (LSubSp‘((LCDual‘𝐾)‘𝑊))
20	2, 5, 3, 4, 18, 19, 6, 8	mapdcl2 41855	. . . . . 6 ⊢ (𝜑 → (𝑀‘𝑋) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)))
21	2, 5, 18, 19, 6	mapdrn2 41850	. . . . . 6 ⊢ (𝜑 → ran 𝑀 = (LSubSp‘((LCDual‘𝐾)‘𝑊)))
22	20, 21	eleqtrrd 2837	. . . . 5 ⊢ (𝜑 → (𝑀‘𝑋) ∈ ran 𝑀)
23	2, 5, 3, 4, 18, 19, 6, 9	mapdcl2 41855	. . . . . 6 ⊢ (𝜑 → (𝑀‘𝑌) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)))
24	23, 21	eleqtrrd 2837	. . . . 5 ⊢ (𝜑 → (𝑀‘𝑌) ∈ ran 𝑀)
25	2, 5, 3, 18, 6, 22, 24	mapdincl 41860	. . . 4 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ∈ ran 𝑀)
26	2, 5, 6, 25	mapdcnvid2 41856	. . 3 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) = ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))
27		inss1 4187	. . . . . . 7 ⊢ ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ⊆ (𝑀‘𝑋)
28	26, 27	eqsstrdi 3976	. . . . . 6 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑋))
29	2, 18, 6	lcdlmod 41791	. . . . . . . . . 10 ⊢ (𝜑 → ((LCDual‘𝐾)‘𝑊) ∈ LMod)
30	19	lssincl 20914	. . . . . . . . . 10 ⊢ ((((LCDual‘𝐾)‘𝑊) ∈ LMod ∧ (𝑀‘𝑋) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)) ∧ (𝑀‘𝑌) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊))) → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)))
31	29, 20, 23, 30	syl3anc 1373	. . . . . . . . 9 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)))
32	31, 21	eleqtrrd 2837	. . . . . . . 8 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ∈ ran 𝑀)
33	2, 5, 3, 4, 6, 32	mapdcnvcl 41851	. . . . . . 7 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ∈ 𝑆)
34	2, 3, 4, 5, 6, 33, 8	mapdord 41837	. . . . . 6 ⊢ (𝜑 → ((𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑋) ↔ (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑋))
35	28, 34	mpbid 232	. . . . 5 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑋)
36	2, 5, 6, 32	mapdcnvid2 41856	. . . . . . 7 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) = ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))
37		inss2 4188	. . . . . . 7 ⊢ ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ⊆ (𝑀‘𝑌)
38	36, 37	eqsstrdi 3976	. . . . . 6 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑌))
39	2, 3, 4, 5, 6, 33, 9	mapdord 41837	. . . . . 6 ⊢ (𝜑 → ((𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑌) ↔ (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑌))
40	38, 39	mpbid 232	. . . . 5 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑌)
41	35, 40	ssind 4191	. . . 4 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ (𝑋 ∩ 𝑌))
42	2, 3, 4, 5, 6, 33, 11	mapdord 41837	. . . 4 ⊢ (𝜑 → ((𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘(𝑋 ∩ 𝑌)) ↔ (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ (𝑋 ∩ 𝑌)))
43	41, 42	mpbird 257	. . 3 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘(𝑋 ∩ 𝑌)))
44	26, 43	eqsstrrd 3967	. 2 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ⊆ (𝑀‘(𝑋 ∩ 𝑌)))
45	17, 44	eqssd 3949	1 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) = ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∩ cin 3898 ⊆ wss 3899 ^◡ccnv 5621 ran crn 5623 ‘cfv 6490 LModclmod 20809 LSubSpclss 20880 HLchlt 39549 LHypclh 40183 DVecHcdvh 41277 LCDualclcd 41785 mapdcmpd 41823

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-rep 5222 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-cnex 11080 ax-resscn 11081 ax-1cn 11082 ax-icn 11083 ax-addcl 11084 ax-addrcl 11085 ax-mulcl 11086 ax-mulrcl 11087 ax-mulcom 11088 ax-addass 11089 ax-mulass 11090 ax-distr 11091 ax-i2m1 11092 ax-1ne0 11093 ax-1rid 11094 ax-rnegex 11095 ax-rrecex 11096 ax-cnre 11097 ax-pre-lttri 11098 ax-pre-lttrn 11099 ax-pre-ltadd 11100 ax-pre-mulgt0 11101 ax-riotaBAD 39152

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-rmo 3348 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-tp 4583 df-op 4585 df-uni 4862 df-int 4901 df-iun 4946 df-iin 4947 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-of 7620 df-om 7807 df-1st 7931 df-2nd 7932 df-tpos 8166 df-undef 8213 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-2o 8396 df-er 8633 df-map 8763 df-en 8882 df-dom 8883 df-sdom 8884 df-fin 8885 df-pnf 11166 df-mnf 11167 df-xr 11168 df-ltxr 11169 df-le 11170 df-sub 11364 df-neg 11365 df-nn 12144 df-2 12206 df-3 12207 df-4 12208 df-5 12209 df-6 12210 df-n0 12400 df-z 12487 df-uz 12750 df-fz 13422 df-struct 17072 df-sets 17089 df-slot 17107 df-ndx 17119 df-base 17135 df-ress 17156 df-plusg 17188 df-mulr 17189 df-sca 17191 df-vsca 17192 df-0g 17359 df-mre 17503 df-mrc 17504 df-acs 17506 df-proset 18215 df-poset 18234 df-plt 18249 df-lub 18265 df-glb 18266 df-join 18267 df-meet 18268 df-p0 18344 df-p1 18345 df-lat 18353 df-clat 18420 df-mgm 18563 df-sgrp 18642 df-mnd 18658 df-submnd 18707 df-grp 18864 df-minusg 18865 df-sbg 18866 df-subg 19051 df-cntz 19244 df-oppg 19273 df-lsm 19563 df-cmn 19709 df-abl 19710 df-mgp 20074 df-rng 20086 df-ur 20115 df-ring 20168 df-oppr 20271 df-dvdsr 20291 df-unit 20292 df-invr 20322 df-dvr 20335 df-nzr 20444 df-rlreg 20625 df-domn 20626 df-drng 20662 df-lmod 20811 df-lss 20881 df-lsp 20921 df-lvec 21053 df-lsatoms 39175 df-lshyp 39176 df-lcv 39218 df-lfl 39257 df-lkr 39285 df-ldual 39323 df-oposet 39375 df-ol 39377 df-oml 39378 df-covers 39465 df-ats 39466 df-atl 39497 df-cvlat 39521 df-hlat 39550 df-llines 39697 df-lplanes 39698 df-lvols 39699 df-lines 39700 df-psubsp 39702 df-pmap 39703 df-padd 39995 df-lhyp 40187 df-laut 40188 df-ldil 40303 df-ltrn 40304 df-trl 40358 df-tgrp 40942 df-tendo 40954 df-edring 40956 df-dveca 41202 df-disoa 41228 df-dvech 41278 df-dib 41338 df-dic 41372 df-dih 41428 df-doch 41547 df-djh 41594 df-lcdual 41786 df-mapd 41824

This theorem is referenced by: mapdheq4lem 41930 mapdh6lem1N 41932 mapdh6lem2N 41933 hdmap1l6lem1 42006 hdmap1l6lem2 42007

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