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Mirrors > Home > HSE Home > Th. List > hocofni | Structured version Visualization version GIF version |
Description: Functionality of composition of Hilbert space operators. (Contributed by NM, 12-Nov-2000.) (New usage is discouraged.) |
Ref | Expression |
---|---|
hoeq.1 | ⊢ 𝑆: ℋ⟶ ℋ |
hoeq.2 | ⊢ 𝑇: ℋ⟶ ℋ |
Ref | Expression |
---|---|
hocofni | ⊢ (𝑆 ∘ 𝑇) Fn ℋ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | hoeq.1 | . . 3 ⊢ 𝑆: ℋ⟶ ℋ | |
2 | hoeq.2 | . . 3 ⊢ 𝑇: ℋ⟶ ℋ | |
3 | 1, 2 | hocofi 31795 | . 2 ⊢ (𝑆 ∘ 𝑇): ℋ⟶ ℋ |
4 | ffn 6737 | . 2 ⊢ ((𝑆 ∘ 𝑇): ℋ⟶ ℋ → (𝑆 ∘ 𝑇) Fn ℋ) | |
5 | 3, 4 | ax-mp 5 | 1 ⊢ (𝑆 ∘ 𝑇) Fn ℋ |
Colors of variables: wff setvar class |
Syntax hints: ∘ ccom 5693 Fn wfn 6558 ⟶wf 6559 ℋchba 30948 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pr 5438 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ral 3060 df-rex 3069 df-rab 3434 df-v 3480 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-nul 4340 df-if 4532 df-sn 4632 df-pr 4634 df-op 4638 df-br 5149 df-opab 5211 df-id 5583 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-rn 5700 df-res 5701 df-ima 5702 df-fun 6565 df-fn 6566 df-f 6567 |
This theorem is referenced by: pjcofni 32191 pjinvari 32220 pj3si 32236 |
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