mapdin - Mathbox for Norm Megill

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Theorem mapdin 42286

Description: Subspace intersection is preserved by the map defined by df-mapd 42249. 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 4188	. . . 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 41734	. . . . . 6 ⊢ (𝜑 → 𝑈 ∈ LMod)
8		mapdin.x	. . . . . 6 ⊢ (𝜑 → 𝑋 ∈ 𝑆)
9		mapdin.y	. . . . . 6 ⊢ (𝜑 → 𝑌 ∈ 𝑆)
10	4	lssincl 21032	. . . . . 6 ⊢ ((𝑈 ∈ LMod ∧ 𝑋 ∈ 𝑆 ∧ 𝑌 ∈ 𝑆) → (𝑋 ∩ 𝑌) ∈ 𝑆)
11	7, 8, 9, 10	syl3anc 1390	. . . . 5 ⊢ (𝜑 → (𝑋 ∩ 𝑌) ∈ 𝑆)
12	2, 3, 4, 5, 6, 11, 8	mapdord 42262	. . . 4 ⊢ (𝜑 → ((𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑋) ↔ (𝑋 ∩ 𝑌) ⊆ 𝑋))
13	1, 12	mpbiri 260	. . 3 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑋))
14		inss2 4189	. . . 4 ⊢ (𝑋 ∩ 𝑌) ⊆ 𝑌
15	2, 3, 4, 5, 6, 11, 9	mapdord 42262	. . . 4 ⊢ (𝜑 → ((𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑌) ↔ (𝑋 ∩ 𝑌) ⊆ 𝑌))
16	14, 15	mpbiri 260	. . 3 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) ⊆ (𝑀‘𝑌))
17	13, 16	ssind 4192	. 2 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) ⊆ ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))
18		eqid 2762	. . . . 5 ⊢ ((LCDual‘𝐾)‘𝑊) = ((LCDual‘𝐾)‘𝑊)
19		eqid 2762	. . . . . . 7 ⊢ (LSubSp‘((LCDual‘𝐾)‘𝑊)) = (LSubSp‘((LCDual‘𝐾)‘𝑊))
20	2, 5, 3, 4, 18, 19, 6, 8	mapdcl2 42280	. . . . . 6 ⊢ (𝜑 → (𝑀‘𝑋) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)))
21	2, 5, 18, 19, 6	mapdrn2 42275	. . . . . 6 ⊢ (𝜑 → ran 𝑀 = (LSubSp‘((LCDual‘𝐾)‘𝑊)))
22	20, 21	eleqtrrd 2865	. . . . 5 ⊢ (𝜑 → (𝑀‘𝑋) ∈ ran 𝑀)
23	2, 5, 3, 4, 18, 19, 6, 9	mapdcl2 42280	. . . . . 6 ⊢ (𝜑 → (𝑀‘𝑌) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)))
24	23, 21	eleqtrrd 2865	. . . . 5 ⊢ (𝜑 → (𝑀‘𝑌) ∈ ran 𝑀)
25	2, 5, 3, 18, 6, 22, 24	mapdincl 42285	. . . 4 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ∈ ran 𝑀)
26	2, 5, 6, 25	mapdcnvid2 42281	. . 3 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) = ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))
27		inss1 4188	. . . . . . 7 ⊢ ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ⊆ (𝑀‘𝑋)
28	26, 27	eqsstrdi 3980	. . . . . 6 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑋))
29	2, 18, 6	lcdlmod 42216	. . . . . . . . . 10 ⊢ (𝜑 → ((LCDual‘𝐾)‘𝑊) ∈ LMod)
30	19	lssincl 21032	. . . . . . . . . 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 1390	. . . . . . . . 9 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ∈ (LSubSp‘((LCDual‘𝐾)‘𝑊)))
32	31, 21	eleqtrrd 2865	. . . . . . . 8 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ∈ ran 𝑀)
33	2, 5, 3, 4, 6, 32	mapdcnvcl 42276	. . . . . . 7 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ∈ 𝑆)
34	2, 3, 4, 5, 6, 33, 8	mapdord 42262	. . . . . 6 ⊢ (𝜑 → ((𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑋) ↔ (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑋))
35	28, 34	mpbid 234	. . . . 5 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑋)
36	2, 5, 6, 32	mapdcnvid2 42281	. . . . . . 7 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) = ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))
37		inss2 4189	. . . . . . 7 ⊢ ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ⊆ (𝑀‘𝑌)
38	36, 37	eqsstrdi 3980	. . . . . 6 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑌))
39	2, 3, 4, 5, 6, 33, 9	mapdord 42262	. . . . . 6 ⊢ (𝜑 → ((𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘𝑌) ↔ (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑌))
40	38, 39	mpbid 234	. . . . 5 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ 𝑌)
41	35, 40	ssind 4192	. . . 4 ⊢ (𝜑 → (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ (𝑋 ∩ 𝑌))
42	2, 3, 4, 5, 6, 33, 11	mapdord 42262	. . . 4 ⊢ (𝜑 → ((𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘(𝑋 ∩ 𝑌)) ↔ (^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌))) ⊆ (𝑋 ∩ 𝑌)))
43	41, 42	mpbird 259	. . 3 ⊢ (𝜑 → (𝑀‘(^◡𝑀‘((𝑀‘𝑋) ∩ (𝑀‘𝑌)))) ⊆ (𝑀‘(𝑋 ∩ 𝑌)))
44	26, 43	eqsstrrd 3971	. 2 ⊢ (𝜑 → ((𝑀‘𝑋) ∩ (𝑀‘𝑌)) ⊆ (𝑀‘(𝑋 ∩ 𝑌)))
45	17, 44	eqssd 3953	1 ⊢ (𝜑 → (𝑀‘(𝑋 ∩ 𝑌)) = ((𝑀‘𝑋) ∩ (𝑀‘𝑌)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 399 = wceq 1560 ∈ wcel 2142 ∩ cin 3903 ⊆ wss 3904 ^◡ccnv 5646 ran crn 5648 ‘cfv 6521 LModclmod 20927 LSubSpclss 20998 HLchlt 39974 LHypclh 40608 DVecHcdvh 41702 LCDualclcd 42210 mapdcmpd 42248

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 ax-riotaBAD 39577

This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-iin 4952 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-of 7660 df-om 7847 df-1st 7970 df-2nd 7971 df-tpos 8206 df-undef 8253 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-2o 8438 df-er 8678 df-map 8810 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-nn 12211 df-2 12280 df-3 12281 df-4 12282 df-5 12283 df-6 12284 df-n0 12482 df-z 12569 df-uz 12840 df-fz 13513 df-struct 17183 df-sets 17200 df-slot 17218 df-ndx 17230 df-base 17246 df-ress 17267 df-plusg 17299 df-mulr 17300 df-sca 17302 df-vsca 17303 df-0g 17470 df-mre 17614 df-mrc 17615 df-acs 17617 df-proset 18326 df-poset 18345 df-plt 18360 df-lub 18376 df-glb 18377 df-join 18378 df-meet 18379 df-p0 18455 df-p1 18456 df-lat 18464 df-clat 18531 df-mgm 18674 df-sgrp 18753 df-mnd 18769 df-submnd 18818 df-grp 18978 df-minusg 18979 df-sbg 18980 df-subg 19165 df-cntz 19357 df-oppg 19386 df-lsm 19676 df-cmn 19822 df-abl 19823 df-mgp 20187 df-rng 20199 df-ur 20232 df-ring 20285 df-oppr 20386 df-dvdsr 20406 df-unit 20407 df-invr 20437 df-dvr 20450 df-nzr 20563 df-rlreg 20744 df-domn 20745 df-drng 20781 df-lmod 20929 df-lss 20999 df-lsp 21039 df-lvec 21170 df-lsatoms 39600 df-lshyp 39601 df-lcv 39643 df-lfl 39682 df-lkr 39710 df-ldual 39748 df-oposet 39800 df-ol 39802 df-oml 39803 df-covers 39890 df-ats 39891 df-atl 39922 df-cvlat 39946 df-hlat 39975 df-llines 40122 df-lplanes 40123 df-lvols 40124 df-lines 40125 df-psubsp 40127 df-pmap 40128 df-padd 40420 df-lhyp 40612 df-laut 40613 df-ldil 40728 df-ltrn 40729 df-trl 40783 df-tgrp 41367 df-tendo 41379 df-edring 41381 df-dveca 41627 df-disoa 41653 df-dvech 41703 df-dib 41763 df-dic 41797 df-dih 41853 df-doch 41972 df-djh 42019 df-lcdual 42211 df-mapd 42249

This theorem is referenced by: mapdheq4lem 42355 mapdh6lem1N 42357 mapdh6lem2N 42358 hdmap1l6lem1 42431 hdmap1l6lem2 42432

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