Theorem hoaddassi 31847

Description: Associativity of sum of Hilbert space operators. (Contributed by NM, 26-Nov-2000.) (New usage is discouraged.)

Hypotheses

Ref	Expression
hods.1	⊢ 𝑅: ℋ⟶ ℋ
hods.2	⊢ 𝑆: ℋ⟶ ℋ
hods.3	⊢ 𝑇: ℋ⟶ ℋ

Assertion

Ref	Expression
hoaddassi	⊢ ((𝑅 +op 𝑆) +op 𝑇) = (𝑅 +op (𝑆 +op 𝑇))

Proof of Theorem hoaddassi

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		hods.1	. . . . . 6 ⊢ 𝑅: ℋ⟶ ℋ
2		hods.2	. . . . . 6 ⊢ 𝑆: ℋ⟶ ℋ
3		hosval 31811	. . . . . 6 ⊢ ((𝑅: ℋ⟶ ℋ ∧ 𝑆: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → ((𝑅 +op 𝑆)‘𝑥) = ((𝑅‘𝑥) +ℎ (𝑆‘𝑥)))
4	1, 2, 3	mp3an12 1454	. . . . 5 ⊢ (𝑥 ∈ ℋ → ((𝑅 +op 𝑆)‘𝑥) = ((𝑅‘𝑥) +ℎ (𝑆‘𝑥)))
5	4	oveq1d 7382	. . . 4 ⊢ (𝑥 ∈ ℋ → (((𝑅 +op 𝑆)‘𝑥) +ℎ (𝑇‘𝑥)) = (((𝑅‘𝑥) +ℎ (𝑆‘𝑥)) +ℎ (𝑇‘𝑥)))
6	1, 2	hoaddcli 31839	. . . . 5 ⊢ (𝑅 +op 𝑆): ℋ⟶ ℋ
7		hods.3	. . . . 5 ⊢ 𝑇: ℋ⟶ ℋ
8		hosval 31811	. . . . 5 ⊢ (((𝑅 +op 𝑆): ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (((𝑅 +op 𝑆) +op 𝑇)‘𝑥) = (((𝑅 +op 𝑆)‘𝑥) +ℎ (𝑇‘𝑥)))
9	6, 7, 8	mp3an12 1454	. . . 4 ⊢ (𝑥 ∈ ℋ → (((𝑅 +op 𝑆) +op 𝑇)‘𝑥) = (((𝑅 +op 𝑆)‘𝑥) +ℎ (𝑇‘𝑥)))
10		hosval 31811	. . . . . . 7 ⊢ ((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → ((𝑆 +op 𝑇)‘𝑥) = ((𝑆‘𝑥) +ℎ (𝑇‘𝑥)))
11	2, 7, 10	mp3an12 1454	. . . . . 6 ⊢ (𝑥 ∈ ℋ → ((𝑆 +op 𝑇)‘𝑥) = ((𝑆‘𝑥) +ℎ (𝑇‘𝑥)))
12	11	oveq2d 7383	. . . . 5 ⊢ (𝑥 ∈ ℋ → ((𝑅‘𝑥) +ℎ ((𝑆 +op 𝑇)‘𝑥)) = ((𝑅‘𝑥) +ℎ ((𝑆‘𝑥) +ℎ (𝑇‘𝑥))))
13	2, 7	hoaddcli 31839	. . . . . 6 ⊢ (𝑆 +op 𝑇): ℋ⟶ ℋ
14		hosval 31811	. . . . . 6 ⊢ ((𝑅: ℋ⟶ ℋ ∧ (𝑆 +op 𝑇): ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → ((𝑅 +op (𝑆 +op 𝑇))‘𝑥) = ((𝑅‘𝑥) +ℎ ((𝑆 +op 𝑇)‘𝑥)))
15	1, 13, 14	mp3an12 1454	. . . . 5 ⊢ (𝑥 ∈ ℋ → ((𝑅 +op (𝑆 +op 𝑇))‘𝑥) = ((𝑅‘𝑥) +ℎ ((𝑆 +op 𝑇)‘𝑥)))
16	1	ffvelcdmi 7035	. . . . . 6 ⊢ (𝑥 ∈ ℋ → (𝑅‘𝑥) ∈ ℋ)
17	2	ffvelcdmi 7035	. . . . . 6 ⊢ (𝑥 ∈ ℋ → (𝑆‘𝑥) ∈ ℋ)
18	7	ffvelcdmi 7035	. . . . . 6 ⊢ (𝑥 ∈ ℋ → (𝑇‘𝑥) ∈ ℋ)
19		ax-hvass 31073	. . . . . 6 ⊢ (((𝑅‘𝑥) ∈ ℋ ∧ (𝑆‘𝑥) ∈ ℋ ∧ (𝑇‘𝑥) ∈ ℋ) → (((𝑅‘𝑥) +ℎ (𝑆‘𝑥)) +ℎ (𝑇‘𝑥)) = ((𝑅‘𝑥) +ℎ ((𝑆‘𝑥) +ℎ (𝑇‘𝑥))))
20	16, 17, 18, 19	syl3anc 1374	. . . . 5 ⊢ (𝑥 ∈ ℋ → (((𝑅‘𝑥) +ℎ (𝑆‘𝑥)) +ℎ (𝑇‘𝑥)) = ((𝑅‘𝑥) +ℎ ((𝑆‘𝑥) +ℎ (𝑇‘𝑥))))
21	12, 15, 20	3eqtr4d 2781	. . . 4 ⊢ (𝑥 ∈ ℋ → ((𝑅 +op (𝑆 +op 𝑇))‘𝑥) = (((𝑅‘𝑥) +ℎ (𝑆‘𝑥)) +ℎ (𝑇‘𝑥)))
22	5, 9, 21	3eqtr4d 2781	. . 3 ⊢ (𝑥 ∈ ℋ → (((𝑅 +op 𝑆) +op 𝑇)‘𝑥) = ((𝑅 +op (𝑆 +op 𝑇))‘𝑥))
23	22	rgen 3053	. 2 ⊢ ∀𝑥 ∈ ℋ (((𝑅 +op 𝑆) +op 𝑇)‘𝑥) = ((𝑅 +op (𝑆 +op 𝑇))‘𝑥)
24	6, 7	hoaddcli 31839	. . 3 ⊢ ((𝑅 +op 𝑆) +op 𝑇): ℋ⟶ ℋ
25	1, 13	hoaddcli 31839	. . 3 ⊢ (𝑅 +op (𝑆 +op 𝑇)): ℋ⟶ ℋ
26	24, 25	hoeqi 31832	. 2 ⊢ (∀𝑥 ∈ ℋ (((𝑅 +op 𝑆) +op 𝑇)‘𝑥) = ((𝑅 +op (𝑆 +op 𝑇))‘𝑥) ↔ ((𝑅 +op 𝑆) +op 𝑇) = (𝑅 +op (𝑆 +op 𝑇)))
27	23, 26	mpbi 230	1 ⊢ ((𝑅 +op 𝑆) +op 𝑇) = (𝑅 +op (𝑆 +op 𝑇))

Syntax hints:   = wceq 1542   ∈ wcel 2114  ∀wral 3051  ⟶wf 6494  ‘cfv 6498  (class class class)co 7367   ℋchba 30990   +_ℎ cva 30991   +_op chos 31009

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pow 5307  ax-pr 5375  ax-un 7689  ax-hilex 31070  ax-hfvadd 31071  ax-hvass 31073

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-reu 3343  df-rab 3390  df-v 3431  df-sbc 3729  df-csb 3838  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-iun 4935  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-f1 6503  df-fo 6504  df-f1o 6505  df-fv 6506  df-ov 7370  df-oprab 7371  df-mpo 7372  df-map 8775  df-hosum 31801

This theorem is referenced by:  hoadd12i  31848  hoadd32i  31849  hoaddass  31853  hosubeq0i  31897