HSE Home Hilbert Space Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  HSE Home  >  Th. List  >  hococli Structured version   Visualization version   GIF version

Theorem hococli 31285
Description: Closure of composition of Hilbert space operators. (Contributed by NM, 12-Nov-2000.) (New usage is discouraged.)
Hypotheses
Ref Expression
hoeq.1 𝑆: ℋ⟶ ℋ
hoeq.2 𝑇: ℋ⟶ ℋ
Assertion
Ref Expression
hococli (𝐴 ∈ ℋ → ((𝑆𝑇)‘𝐴) ∈ ℋ)

Proof of Theorem hococli
StepHypRef Expression
1 hoeq.1 . . 3 𝑆: ℋ⟶ ℋ
2 hoeq.2 . . 3 𝑇: ℋ⟶ ℋ
31, 2hocoi 31284 . 2 (𝐴 ∈ ℋ → ((𝑆𝑇)‘𝐴) = (𝑆‘(𝑇𝐴)))
42ffvelcdmi 7084 . . 3 (𝐴 ∈ ℋ → (𝑇𝐴) ∈ ℋ)
51ffvelcdmi 7084 . . 3 ((𝑇𝐴) ∈ ℋ → (𝑆‘(𝑇𝐴)) ∈ ℋ)
64, 5syl 17 . 2 (𝐴 ∈ ℋ → (𝑆‘(𝑇𝐴)) ∈ ℋ)
73, 6eqeltrd 2831 1 (𝐴 ∈ ℋ → ((𝑆𝑇)‘𝐴) ∈ ℋ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2104  ccom 5679  wf 6538  cfv 6542  chba 30439
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1911  ax-6 1969  ax-7 2009  ax-8 2106  ax-9 2114  ax-10 2135  ax-11 2152  ax-12 2169  ax-ext 2701  ax-sep 5298  ax-nul 5305  ax-pr 5426
This theorem depends on definitions:  df-bi 206  df-an 395  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2532  df-eu 2561  df-clab 2708  df-cleq 2722  df-clel 2808  df-ne 2939  df-ral 3060  df-rex 3069  df-rab 3431  df-v 3474  df-dif 3950  df-un 3952  df-in 3954  df-ss 3964  df-nul 4322  df-if 4528  df-sn 4628  df-pr 4630  df-op 4634  df-uni 4908  df-br 5148  df-opab 5210  df-id 5573  df-xp 5681  df-rel 5682  df-cnv 5683  df-co 5684  df-dm 5685  df-rn 5686  df-res 5687  df-ima 5688  df-iota 6494  df-fun 6544  df-fn 6545  df-f 6546  df-fv 6550
This theorem is referenced by:  nmopcoadji  31621  pjcohcli  31680  pj3si  31727  pj3cor1i  31729
  Copyright terms: Public domain W3C validator