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Theorem hosval 28569
 Description: Value of the sum of two Hilbert space operators. (Contributed by NM, 10-Nov-2000.) (Revised by Mario Carneiro, 16-Nov-2013.) (New usage is discouraged.)
Assertion
Ref Expression
hosval ((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝐴 ∈ ℋ) → ((𝑆 +op 𝑇)‘𝐴) = ((𝑆𝐴) + (𝑇𝐴)))

Proof of Theorem hosval
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 hosmval 28564 . . . 4 ((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) → (𝑆 +op 𝑇) = (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥))))
21fveq1d 6180 . . 3 ((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) → ((𝑆 +op 𝑇)‘𝐴) = ((𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥)))‘𝐴))
3 fveq2 6178 . . . . 5 (𝑥 = 𝐴 → (𝑆𝑥) = (𝑆𝐴))
4 fveq2 6178 . . . . 5 (𝑥 = 𝐴 → (𝑇𝑥) = (𝑇𝐴))
53, 4oveq12d 6653 . . . 4 (𝑥 = 𝐴 → ((𝑆𝑥) + (𝑇𝑥)) = ((𝑆𝐴) + (𝑇𝐴)))
6 eqid 2620 . . . 4 (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥))) = (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥)))
7 ovex 6663 . . . 4 ((𝑆𝐴) + (𝑇𝐴)) ∈ V
85, 6, 7fvmpt 6269 . . 3 (𝐴 ∈ ℋ → ((𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥)))‘𝐴) = ((𝑆𝐴) + (𝑇𝐴)))
92, 8sylan9eq 2674 . 2 (((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ) ∧ 𝐴 ∈ ℋ) → ((𝑆 +op 𝑇)‘𝐴) = ((𝑆𝐴) + (𝑇𝐴)))
1093impa 1257 1 ((𝑆: ℋ⟶ ℋ ∧ 𝑇: ℋ⟶ ℋ ∧ 𝐴 ∈ ℋ) → ((𝑆 +op 𝑇)‘𝐴) = ((𝑆𝐴) + (𝑇𝐴)))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 384   ∧ w3a 1036   = wceq 1481   ∈ wcel 1988   ↦ cmpt 4720  ⟶wf 5872  ‘cfv 5876  (class class class)co 6635   ℋchil 27746   +ℎ cva 27747   +op chos 27765 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1720  ax-4 1735  ax-5 1837  ax-6 1886  ax-7 1933  ax-8 1990  ax-9 1997  ax-10 2017  ax-11 2032  ax-12 2045  ax-13 2244  ax-ext 2600  ax-rep 4762  ax-sep 4772  ax-nul 4780  ax-pow 4834  ax-pr 4897  ax-un 6934  ax-hilex 27826 This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1038  df-tru 1484  df-ex 1703  df-nf 1708  df-sb 1879  df-eu 2472  df-mo 2473  df-clab 2607  df-cleq 2613  df-clel 2616  df-nfc 2751  df-ne 2792  df-ral 2914  df-rex 2915  df-reu 2916  df-rab 2918  df-v 3197  df-sbc 3430  df-csb 3527  df-dif 3570  df-un 3572  df-in 3574  df-ss 3581  df-nul 3908  df-if 4078  df-pw 4151  df-sn 4169  df-pr 4171  df-op 4175  df-uni 4428  df-iun 4513  df-br 4645  df-opab 4704  df-mpt 4721  df-id 5014  df-xp 5110  df-rel 5111  df-cnv 5112  df-co 5113  df-dm 5114  df-rn 5115  df-res 5116  df-ima 5117  df-iota 5839  df-fun 5878  df-fn 5879  df-f 5880  df-f1 5881  df-fo 5882  df-f1o 5883  df-fv 5884  df-ov 6638  df-oprab 6639  df-mpt2 6640  df-map 7844  df-hosum 28559 This theorem is referenced by:  hoscl  28574  hoaddcomi  28601  hodsi  28604  hoaddassi  28605  hocadddiri  28608  hoaddid1i  28615  honegsubi  28625  hoadddi  28632  hoadddir  28633  lnophsi  28830  hmops  28849  adjadd  28922  nmoptrii  28923  leopadd  28961  pjsdii  28984  pjscji  28999  pjtoi  29008
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