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Theorem ip2di 21573

Description: Distributive law for inner product. (Contributed by NM, 17-Apr-2008.) (Revised by Mario Carneiro, 7-Oct-2015.)

**Hypotheses**
Ref	Expression
phlsrng.f	⊢ 𝐹 = (Scalar‘𝑊)
phllmhm.h	⊢ , = (·_𝑖‘𝑊)
phllmhm.v	⊢ 𝑉 = (Base‘𝑊)
ipdir.g	⊢ + = (+_g‘𝑊)
ipdir.p	⊢ ⨣ = (+_g‘𝐹)
ip2di.1	⊢ (𝜑 → 𝑊 ∈ PreHil)
ip2di.2	⊢ (𝜑 → 𝐴 ∈ 𝑉)
ip2di.3	⊢ (𝜑 → 𝐵 ∈ 𝑉)
ip2di.4	⊢ (𝜑 → 𝐶 ∈ 𝑉)
ip2di.5	⊢ (𝜑 → 𝐷 ∈ 𝑉)

**Assertion**
Ref	Expression
ip2di	⊢ (𝜑 → ((𝐴 + 𝐵) , (𝐶 + 𝐷)) = (((𝐴 , 𝐶) ⨣ (𝐵 , 𝐷)) ⨣ ((𝐴 , 𝐷) ⨣ (𝐵 , 𝐶))))

**Proof of Theorem ip2di**
Step	Hyp	Ref	Expression
1		ip2di.1	. . 3 ⊢ (𝜑 → 𝑊 ∈ PreHil)
2		ip2di.2	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
3		ip2di.3	. . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑉)
4		phllmod 21562	. . . . 5 ⊢ (𝑊 ∈ PreHil → 𝑊 ∈ LMod)
5	1, 4	syl 17	. . . 4 ⊢ (𝜑 → 𝑊 ∈ LMod)
6		ip2di.4	. . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑉)
7		ip2di.5	. . . 4 ⊢ (𝜑 → 𝐷 ∈ 𝑉)
8		phllmhm.v	. . . . 5 ⊢ 𝑉 = (Base‘𝑊)
9		ipdir.g	. . . . 5 ⊢ + = (+_g‘𝑊)
10	8, 9	lmodvacl 20758	. . . 4 ⊢ ((𝑊 ∈ LMod ∧ 𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉) → (𝐶 + 𝐷) ∈ 𝑉)
11	5, 6, 7, 10	syl3anc 1369	. . 3 ⊢ (𝜑 → (𝐶 + 𝐷) ∈ 𝑉)
12		phlsrng.f	. . . 4 ⊢ 𝐹 = (Scalar‘𝑊)
13		phllmhm.h	. . . 4 ⊢ , = (·_𝑖‘𝑊)
14		ipdir.p	. . . 4 ⊢ ⨣ = (+_g‘𝐹)
15	12, 13, 8, 9, 14	ipdir 21571	. . 3 ⊢ ((𝑊 ∈ PreHil ∧ (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉 ∧ (𝐶 + 𝐷) ∈ 𝑉)) → ((𝐴 + 𝐵) , (𝐶 + 𝐷)) = ((𝐴 , (𝐶 + 𝐷)) ⨣ (𝐵 , (𝐶 + 𝐷))))
16	1, 2, 3, 11, 15	syl13anc 1370	. 2 ⊢ (𝜑 → ((𝐴 + 𝐵) , (𝐶 + 𝐷)) = ((𝐴 , (𝐶 + 𝐷)) ⨣ (𝐵 , (𝐶 + 𝐷))))
17	12, 13, 8, 9, 14	ipdi 21572	. . . 4 ⊢ ((𝑊 ∈ PreHil ∧ (𝐴 ∈ 𝑉 ∧ 𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉)) → (𝐴 , (𝐶 + 𝐷)) = ((𝐴 , 𝐶) ⨣ (𝐴 , 𝐷)))
18	1, 2, 6, 7, 17	syl13anc 1370	. . 3 ⊢ (𝜑 → (𝐴 , (𝐶 + 𝐷)) = ((𝐴 , 𝐶) ⨣ (𝐴 , 𝐷)))
19	12, 13, 8, 9, 14	ipdi 21572	. . . . 5 ⊢ ((𝑊 ∈ PreHil ∧ (𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉)) → (𝐵 , (𝐶 + 𝐷)) = ((𝐵 , 𝐶) ⨣ (𝐵 , 𝐷)))
20	1, 3, 6, 7, 19	syl13anc 1370	. . . 4 ⊢ (𝜑 → (𝐵 , (𝐶 + 𝐷)) = ((𝐵 , 𝐶) ⨣ (𝐵 , 𝐷)))
21	12	phlsrng 21563	. . . . . 6 ⊢ (𝑊 ∈ PreHil → 𝐹 ∈ *-Ring)
22		srngring 20732	. . . . . 6 ⊢ (𝐹 ∈ *-Ring → 𝐹 ∈ Ring)
23		ringcmn 20218	. . . . . 6 ⊢ (𝐹 ∈ Ring → 𝐹 ∈ CMnd)
24	1, 21, 22, 23	4syl 19	. . . . 5 ⊢ (𝜑 → 𝐹 ∈ CMnd)
25		eqid 2728	. . . . . . 7 ⊢ (Base‘𝐹) = (Base‘𝐹)
26	12, 13, 8, 25	ipcl 21565	. . . . . 6 ⊢ ((𝑊 ∈ PreHil ∧ 𝐵 ∈ 𝑉 ∧ 𝐶 ∈ 𝑉) → (𝐵 , 𝐶) ∈ (Base‘𝐹))
27	1, 3, 6, 26	syl3anc 1369	. . . . 5 ⊢ (𝜑 → (𝐵 , 𝐶) ∈ (Base‘𝐹))
28	12, 13, 8, 25	ipcl 21565	. . . . . 6 ⊢ ((𝑊 ∈ PreHil ∧ 𝐵 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉) → (𝐵 , 𝐷) ∈ (Base‘𝐹))
29	1, 3, 7, 28	syl3anc 1369	. . . . 5 ⊢ (𝜑 → (𝐵 , 𝐷) ∈ (Base‘𝐹))
30	25, 14	cmncom 19753	. . . . 5 ⊢ ((𝐹 ∈ CMnd ∧ (𝐵 , 𝐶) ∈ (Base‘𝐹) ∧ (𝐵 , 𝐷) ∈ (Base‘𝐹)) → ((𝐵 , 𝐶) ⨣ (𝐵 , 𝐷)) = ((𝐵 , 𝐷) ⨣ (𝐵 , 𝐶)))
31	24, 27, 29, 30	syl3anc 1369	. . . 4 ⊢ (𝜑 → ((𝐵 , 𝐶) ⨣ (𝐵 , 𝐷)) = ((𝐵 , 𝐷) ⨣ (𝐵 , 𝐶)))
32	20, 31	eqtrd 2768	. . 3 ⊢ (𝜑 → (𝐵 , (𝐶 + 𝐷)) = ((𝐵 , 𝐷) ⨣ (𝐵 , 𝐶)))
33	18, 32	oveq12d 7438	. 2 ⊢ (𝜑 → ((𝐴 , (𝐶 + 𝐷)) ⨣ (𝐵 , (𝐶 + 𝐷))) = (((𝐴 , 𝐶) ⨣ (𝐴 , 𝐷)) ⨣ ((𝐵 , 𝐷) ⨣ (𝐵 , 𝐶))))
34	12, 13, 8, 25	ipcl 21565	. . . 4 ⊢ ((𝑊 ∈ PreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐶 ∈ 𝑉) → (𝐴 , 𝐶) ∈ (Base‘𝐹))
35	1, 2, 6, 34	syl3anc 1369	. . 3 ⊢ (𝜑 → (𝐴 , 𝐶) ∈ (Base‘𝐹))
36	12, 13, 8, 25	ipcl 21565	. . . 4 ⊢ ((𝑊 ∈ PreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐷 ∈ 𝑉) → (𝐴 , 𝐷) ∈ (Base‘𝐹))
37	1, 2, 7, 36	syl3anc 1369	. . 3 ⊢ (𝜑 → (𝐴 , 𝐷) ∈ (Base‘𝐹))
38	25, 14	cmn4 19756	. . 3 ⊢ ((𝐹 ∈ CMnd ∧ ((𝐴 , 𝐶) ∈ (Base‘𝐹) ∧ (𝐴 , 𝐷) ∈ (Base‘𝐹)) ∧ ((𝐵 , 𝐷) ∈ (Base‘𝐹) ∧ (𝐵 , 𝐶) ∈ (Base‘𝐹))) → (((𝐴 , 𝐶) ⨣ (𝐴 , 𝐷)) ⨣ ((𝐵 , 𝐷) ⨣ (𝐵 , 𝐶))) = (((𝐴 , 𝐶) ⨣ (𝐵 , 𝐷)) ⨣ ((𝐴 , 𝐷) ⨣ (𝐵 , 𝐶))))
39	24, 35, 37, 29, 27, 38	syl122anc 1377	. 2 ⊢ (𝜑 → (((𝐴 , 𝐶) ⨣ (𝐴 , 𝐷)) ⨣ ((𝐵 , 𝐷) ⨣ (𝐵 , 𝐶))) = (((𝐴 , 𝐶) ⨣ (𝐵 , 𝐷)) ⨣ ((𝐴 , 𝐷) ⨣ (𝐵 , 𝐶))))
40	16, 33, 39	3eqtrd 2772	1 ⊢ (𝜑 → ((𝐴 + 𝐵) , (𝐶 + 𝐷)) = (((𝐴 , 𝐶) ⨣ (𝐵 , 𝐷)) ⨣ ((𝐴 , 𝐷) ⨣ (𝐵 , 𝐶))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1534 ∈ wcel 2099 ‘cfv 6548 (class class class)co 7420 Basecbs 17180 +_gcplusg 17233 Scalarcsca 17236 ·_𝑖cip 17238 CMndccmn 19735 Ringcrg 20173 *-Ringcsr 20724 LModclmod 20743 PreHilcphl 21556

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5365 ax-pr 5429 ax-un 7740 ax-cnex 11195 ax-resscn 11196 ax-1cn 11197 ax-icn 11198 ax-addcl 11199 ax-addrcl 11200 ax-mulcl 11201 ax-mulrcl 11202 ax-mulcom 11203 ax-addass 11204 ax-mulass 11205 ax-distr 11206 ax-i2m1 11207 ax-1ne0 11208 ax-1rid 11209 ax-rnegex 11210 ax-rrecex 11211 ax-cnre 11212 ax-pre-lttri 11213 ax-pre-lttrn 11214 ax-pre-ltadd 11215 ax-pre-mulgt0 11216

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3373 df-reu 3374 df-rab 3430 df-v 3473 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5576 df-eprel 5582 df-po 5590 df-so 5591 df-fr 5633 df-we 5635 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6500 df-fun 6550 df-fn 6551 df-f 6552 df-f1 6553 df-fo 6554 df-f1o 6555 df-fv 6556 df-riota 7376 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7871 df-2nd 7994 df-tpos 8232 df-frecs 8287 df-wrecs 8318 df-recs 8392 df-rdg 8431 df-er 8725 df-map 8847 df-en 8965 df-dom 8966 df-sdom 8967 df-pnf 11281 df-mnf 11282 df-xr 11283 df-ltxr 11284 df-le 11285 df-sub 11477 df-neg 11478 df-nn 12244 df-2 12306 df-3 12307 df-4 12308 df-5 12309 df-6 12310 df-7 12311 df-8 12312 df-sets 17133 df-slot 17151 df-ndx 17163 df-base 17181 df-plusg 17246 df-mulr 17247 df-sca 17249 df-vsca 17250 df-ip 17251 df-0g 17423 df-mgm 18600 df-sgrp 18679 df-mnd 18695 df-mhm 18740 df-grp 18893 df-minusg 18894 df-ghm 19168 df-cmn 19737 df-abl 19738 df-mgp 20075 df-ur 20122 df-ring 20175 df-oppr 20273 df-rhm 20411 df-staf 20725 df-srng 20726 df-lmod 20745 df-lmhm 20907 df-lvec 20988 df-sra 21058 df-rgmod 21059 df-phl 21558

This theorem is referenced by: cph2di 25148

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