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Theorem hfsmval 28906
Description: Value of the sum of two Hilbert space functionals. (Contributed by NM, 23-May-2006.) (Revised by Mario Carneiro, 23-Aug-2014.) (New usage is discouraged.)
Assertion
Ref Expression
hfsmval ((𝑆: ℋ⟶ℂ ∧ 𝑇: ℋ⟶ℂ) → (𝑆 +fn 𝑇) = (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥))))
Distinct variable groups:   𝑥,𝑆   𝑥,𝑇

Proof of Theorem hfsmval
Dummy variables 𝑓 𝑔 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 cnex 10209 . . 3 ℂ ∈ V
2 ax-hilex 28165 . . 3 ℋ ∈ V
31, 2elmap 8052 . 2 (𝑆 ∈ (ℂ ↑𝑚 ℋ) ↔ 𝑆: ℋ⟶ℂ)
41, 2elmap 8052 . 2 (𝑇 ∈ (ℂ ↑𝑚 ℋ) ↔ 𝑇: ℋ⟶ℂ)
5 fveq1 6351 . . . . 5 (𝑓 = 𝑆 → (𝑓𝑥) = (𝑆𝑥))
65oveq1d 6828 . . . 4 (𝑓 = 𝑆 → ((𝑓𝑥) + (𝑔𝑥)) = ((𝑆𝑥) + (𝑔𝑥)))
76mpteq2dv 4897 . . 3 (𝑓 = 𝑆 → (𝑥 ∈ ℋ ↦ ((𝑓𝑥) + (𝑔𝑥))) = (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑔𝑥))))
8 fveq1 6351 . . . . 5 (𝑔 = 𝑇 → (𝑔𝑥) = (𝑇𝑥))
98oveq2d 6829 . . . 4 (𝑔 = 𝑇 → ((𝑆𝑥) + (𝑔𝑥)) = ((𝑆𝑥) + (𝑇𝑥)))
109mpteq2dv 4897 . . 3 (𝑔 = 𝑇 → (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑔𝑥))) = (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥))))
11 df-hfsum 28901 . . 3 +fn = (𝑓 ∈ (ℂ ↑𝑚 ℋ), 𝑔 ∈ (ℂ ↑𝑚 ℋ) ↦ (𝑥 ∈ ℋ ↦ ((𝑓𝑥) + (𝑔𝑥))))
122mptex 6650 . . 3 (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥))) ∈ V
137, 10, 11, 12ovmpt2 6961 . 2 ((𝑆 ∈ (ℂ ↑𝑚 ℋ) ∧ 𝑇 ∈ (ℂ ↑𝑚 ℋ)) → (𝑆 +fn 𝑇) = (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥))))
143, 4, 13syl2anbr 498 1 ((𝑆: ℋ⟶ℂ ∧ 𝑇: ℋ⟶ℂ) → (𝑆 +fn 𝑇) = (𝑥 ∈ ℋ ↦ ((𝑆𝑥) + (𝑇𝑥))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383   = wceq 1632  wcel 2139  cmpt 4881  wf 6045  cfv 6049  (class class class)co 6813  𝑚 cmap 8023  cc 10126   + caddc 10131  chil 28085   +fn chfs 28107
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-rep 4923  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114  ax-cnex 10184  ax-hilex 28165
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-reu 3057  df-rab 3059  df-v 3342  df-sbc 3577  df-csb 3675  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-nul 4059  df-if 4231  df-pw 4304  df-sn 4322  df-pr 4324  df-op 4328  df-uni 4589  df-iun 4674  df-br 4805  df-opab 4865  df-mpt 4882  df-id 5174  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-f1 6054  df-fo 6055  df-f1o 6056  df-fv 6057  df-ov 6816  df-oprab 6817  df-mpt2 6818  df-map 8025  df-hfsum 28901
This theorem is referenced by:  hfsval  28911
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