hoscl - Hilbert Space Explorer

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Theorem hoscl 29514

Description: Closure of the sum of two Hilbert space operators. (Contributed by NM, 12-Nov-2000.) (New usage is discouraged.)

**Assertion**
Ref	Expression
hoscl	⊢ (((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) ∧ 𝐴 ∈ ℋ) → ((𝑆 +_op 𝑇)‘𝐴) ∈ ℋ)

**Proof of Theorem hoscl**
Step	Hyp	Ref	Expression
1		hosval 29509	. . 3 ⊢ ((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝐴 ∈ ℋ) → ((𝑆 +_op 𝑇)‘𝐴) = ((𝑆‘𝐴) +_ℎ (𝑇‘𝐴)))
2	1	3expa 1113	. 2 ⊢ (((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) ∧ 𝐴 ∈ ℋ) → ((𝑆 +_op 𝑇)‘𝐴) = ((𝑆‘𝐴) +_ℎ (𝑇‘𝐴)))
3		ffvelrn 6842	. . . . 5 ⊢ ((𝑆: ℋ⟶ ℋ ∧ 𝐴 ∈ ℋ) → (𝑆‘𝐴) ∈ ℋ)
4		ffvelrn 6842	. . . . 5 ⊢ ((𝑇: ℋ⟶ ℋ ∧ 𝐴 ∈ ℋ) → (𝑇‘𝐴) ∈ ℋ)
5	3, 4	anim12i 614	. . . 4 ⊢ (((𝑆: ℋ⟶ ℋ ∧ 𝐴 ∈ ℋ) ∧ (𝑇: ℋ⟶ ℋ ∧ 𝐴 ∈ ℋ)) → ((𝑆‘𝐴) ∈ ℋ ∧ (𝑇‘𝐴) ∈ ℋ))
6	5	anandirs 677	. . 3 ⊢ (((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) ∧ 𝐴 ∈ ℋ) → ((𝑆‘𝐴) ∈ ℋ ∧ (𝑇‘𝐴) ∈ ℋ))
7		hvaddcl 28781	. . 3 ⊢ (((𝑆‘𝐴) ∈ ℋ ∧ (𝑇‘𝐴) ∈ ℋ) → ((𝑆‘𝐴) +_ℎ (𝑇‘𝐴)) ∈ ℋ)
8	6, 7	syl 17	. 2 ⊢ (((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) ∧ 𝐴 ∈ ℋ) → ((𝑆‘𝐴) +_ℎ (𝑇‘𝐴)) ∈ ℋ)
9	2, 8	eqeltrd 2911	1 ⊢ (((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) ∧ 𝐴 ∈ ℋ) → ((𝑆 +_op 𝑇)‘𝐴) ∈ ℋ)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 398 = wceq 1531 ∈ wcel 2108 ⟶wf 6344 ‘cfv 6348 (class class class)co 7148 ℋchba 28688 +_ℎ cva 28689 +_op chos 28707

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 1905 ax-6 1964 ax-7 2009 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2154 ax-12 2170 ax-ext 2791 ax-rep 5181 ax-sep 5194 ax-nul 5201 ax-pow 5257 ax-pr 5320 ax-un 7453 ax-hilex 28768 ax-hfvadd 28769

This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1084 df-tru 1534 df-ex 1775 df-nf 1779 df-sb 2064 df-mo 2616 df-eu 2648 df-clab 2798 df-cleq 2812 df-clel 2891 df-nfc 2961 df-ne 3015 df-ral 3141 df-rex 3142 df-reu 3143 df-rab 3145 df-v 3495 df-sbc 3771 df-csb 3882 df-dif 3937 df-un 3939 df-in 3941 df-ss 3950 df-nul 4290 df-if 4466 df-pw 4539 df-sn 4560 df-pr 4562 df-op 4566 df-uni 4831 df-iun 4912 df-br 5058 df-opab 5120 df-mpt 5138 df-id 5453 df-xp 5554 df-rel 5555 df-cnv 5556 df-co 5557 df-dm 5558 df-rn 5559 df-res 5560 df-ima 5561 df-iota 6307 df-fun 6350 df-fn 6351 df-f 6352 df-f1 6353 df-fo 6354 df-f1o 6355 df-fv 6356 df-ov 7151 df-oprab 7152 df-mpo 7153 df-map 8400 df-hosum 29499

This theorem is referenced by: hoscli 29531