Theorem homco1 28044

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 6185	. . . . . 6 ⊢ ((𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)))
2	1	3ad2antl3 1218	. . . . 5 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)))
3		fvco3 6185	. . . . . . . 8 ⊢ ((𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → ((𝑇 ∘ 𝑈)‘𝑥) = (𝑇‘(𝑈‘𝑥)))
4	3	3ad2antl3 1218	. . . . . . 7 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝑇 ∘ 𝑈)‘𝑥) = (𝑇‘(𝑈‘𝑥)))
5	4	oveq2d 6565	. . . . . 6 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
6		ffvelrn 6265	. . . . . . . . . 10 ⊢ ((𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (𝑈‘𝑥) ∈ ℋ)
7		homval 27984	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ (𝑈‘𝑥) ∈ ℋ) → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
8	6, 7	syl3an3 1353	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ (𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ)) → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
9	8	3expa 1257	. . . . . . . 8 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ) ∧ (𝑈: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ)) → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥))))
10	9	exp43 638	. . . . . . 7 ⊢ (𝐴 ∈ ℂ → (𝑇: ℋ⟶ ℋ → (𝑈: ℋ⟶ ℋ → (𝑥 ∈ ℋ → ((𝐴 ·op 𝑇)‘(𝑈‘𝑥)) = (𝐴 ·ℎ (𝑇‘(𝑈‘𝑥)))))))
11	10	3imp1 1272	. . . . . 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 2647	. . . . 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 2647	. . . 4 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)))
14		fco 5971	. . . . . . . 8 ⊢ ((𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → (𝑇 ∘ 𝑈): ℋ⟶ ℋ)
15		homval 27984	. . . . . . . 8 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇 ∘ 𝑈): ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)))
16	14, 15	syl3an2 1352	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥)))
17	16	3expia 1259	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ)) → (𝑥 ∈ ℋ → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥))))
18	17	3impb 1252	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → (𝑥 ∈ ℋ → ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥) = (𝐴 ·ℎ ((𝑇 ∘ 𝑈)‘𝑥))))
19	18	imp 444	. . . 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 2647	. . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥))
21	20	ralrimiva 2949	. 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ∀𝑥 ∈ ℋ (((𝐴 ·op 𝑇) ∘ 𝑈)‘𝑥) = ((𝐴 ·op (𝑇 ∘ 𝑈))‘𝑥))
22		homulcl 28002	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ) → (𝐴 ·op 𝑇): ℋ⟶ ℋ)
23		fco 5971	. . . 4 ⊢ (((𝐴 ·op 𝑇): ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ((𝐴 ·op 𝑇) ∘ 𝑈): ℋ⟶ ℋ)
24	22, 23	stoic3 1692	. . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ((𝐴 ·op 𝑇) ∘ 𝑈): ℋ⟶ ℋ)
25		homulcl 28002	. . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇 ∘ 𝑈): ℋ⟶ ℋ) → (𝐴 ·op (𝑇 ∘ 𝑈)): ℋ⟶ ℋ)
26	14, 25	sylan2 490	. . . 4 ⊢ ((𝐴 ∈ ℂ ∧ (𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ)) → (𝐴 ·op (𝑇 ∘ 𝑈)): ℋ⟶ ℋ)
27	26	3impb 1252	. . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → (𝐴 ·op (𝑇 ∘ 𝑈)): ℋ⟶ ℋ)
28		hoeq 28003	. . 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 691	. 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 221	1 ⊢ ((𝐴 ∈ ℂ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑈: ℋ⟶ ℋ) → ((𝐴 ·op 𝑇) ∘ 𝑈) = (𝐴 ·op (𝑇 ∘ 𝑈)))

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977  ∀wral 2896   ∘ ccom 5042  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  ℂcc 9813   ℋchil 27160   ·_ℎ csm 27162   ·_op chot 27180

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-hilex 27240  ax-hfvmul 27246

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-map 7746  df-homul 27974

This theorem is referenced by:  opsqrlem1  28383