Theorem homco1 30064

Description: Associative law for scalar product and composition of operators. (Contributed by NM, 13-Aug-2006.) (New usage is discouraged.)

Assertion

Ref	Expression
homco1	⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ((𝐴 ·op 𝑇) ∘ 𝑈) = (𝐴 ·op (𝑇 ∘ 𝑈)))

Proof of Theorem homco1

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		fvco3 6849	. . . . . 6 ⊢ ((𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)))
2	1	3ad2antl3 1185	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)))
3		fvco3 6849	. . . . . . . 8 ⊢ ((𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → ((𝑇 ∘ 𝑈)‘𝑥) = (𝑇‘(𝑈‘𝑥)))
4	3	3ad2antl3 1185	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝑇 ∘ 𝑈)‘𝑥) = (𝑇‘(𝑈‘𝑥)))
5	4	oveq2d 7271	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
6		ffvelrn 6941	. . . . . . . . . 10 ⊢ ((𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (𝑈‘𝑥) ∈ ℋ)
7		homval 30004	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ (𝑈‘𝑥) ∈ ℋ) → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
8	6, 7	syl3an3 1163	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ (𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ)) → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
9	8	3expa 1116	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ) ∧ (𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ)) → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
10	9	exp43 436	. . . . . . 7 ⊢ (𝐴 ∈ ℂ → (𝑇: ℋ⟶ ℋ → (𝑈: ℋ⟶ ℋ → (𝑥 ∈ ℋ → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥)))))))
11	10	3imp1 1345	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
12	5, 11	eqtr4d 2781	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)) = ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)))
13	2, 12	eqtr4d 2781	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)))
14		fco 6608	. . . . . . . 8 ⊢ ((𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → (𝑇 ∘ 𝑈): ℋ⟶ ℋ)
15		homval 30004	. . . . . . . 8 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇 ∘ 𝑈): ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)))
16	14, 15	syl3an2 1162	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)))
17	16	3expia 1119	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ)) → (𝑥 ∈ ℋ → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥))))
18	17	3impb 1113	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → (𝑥 ∈ ℋ → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥))))
19	18	imp 406	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)))
20	13, 19	eqtr4d 2781	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥))
21	20	ralrimiva 3107	. 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ∀𝑥 ∈ ℋ (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥))
22		homulcl 30022	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ) → (𝐴 ·op 𝑇): ℋ⟶ ℋ)
23		fco 6608	. . . 4 ⊢ (((𝐴 ·op 𝑇): ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ((𝐴 ·op 𝑇) ∘ 𝑈): ℋ⟶ ℋ)
24	22, 23	stoic3 1780	. . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ((𝐴 ·op 𝑇) ∘ 𝑈): ℋ⟶ ℋ)
25		homulcl 30022	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇 ∘ 𝑈): ℋ⟶ ℋ) → (𝐴 ·op (𝑇 ∘ 𝑈)): ℋ⟶ ℋ)
26	14, 25	sylan2 592	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ)) → (𝐴 ·op (𝑇 ∘ 𝑈)): ℋ⟶ ℋ)
27	26	3impb 1113	. . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → (𝐴 ·op (𝑇 ∘ 𝑈)): ℋ⟶ ℋ)
28		hoeq 30023	. . 3 ⊢ ((((𝐴 ·op 𝑇) ∘ 𝑈): ℋ⟶ ℋ ∧ (𝐴 ·op (𝑇 ∘ 𝑈)): ℋ⟶ ℋ) → (∀𝑥 ∈ ℋ (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) ↔ ((𝐴 ·op 𝑇) ∘ 𝑈) = (𝐴 ·op (𝑇 ∘ 𝑈))))
29	24, 27, 28	syl2anc 583	. 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → (∀𝑥 ∈ ℋ (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) ↔ ((𝐴 ·op 𝑇) ∘ 𝑈) = (𝐴 ·op (𝑇 ∘ 𝑈))))
30	21, 29	mpbid 231	1 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ((𝐴 ·op 𝑇) ∘ 𝑈) = (𝐴 ·op (𝑇 ∘ 𝑈)))

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 395   ∧ w3a 1085   = wceq 1539   ∈ wcel 2108  ∀wral 3063   ∘ ccom 5584  ⟶wf 6414  ‘cfv 6418  (class class class)co 7255  ℂcc 10800   ℋchba 29182   ·_ℎ csm 29184   ·_op chot 29202

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-hilex 29262  ax-hfvmul 29268

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-reu 3070  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-iun 4923  df-br 5071  df-opab 5133  df-mpt 5154  df-id 5480  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-ov 7258  df-oprab 7259  df-mpo 7260  df-map 8575  df-homul 29994

This theorem is referenced by:  opsqrlem1  30403