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Theorem kbass2 28843
Description: Dirac bra-ket associative law (⟨𝐴𝐵⟩)⟨𝐶 ∣ = 𝐴 ∣ ( ∣ 𝐵 𝐶 ∣ ) i.e. the juxtaposition of an inner product with a bra equals a ket juxtaposed with an outer product. (Contributed by NM, 23-May-2006.) (New usage is discouraged.)
Assertion
Ref Expression
kbass2 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)))

Proof of Theorem kbass2
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 ovex 6638 . . . 4 (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)) ∈ V
2 eqid 2621 . . . 4 (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
31, 2fnmpti 5984 . . 3 (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))) Fn ℋ
4 bracl 28675 . . . . . 6 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → ((bra‘𝐴)‘𝐵) ∈ ℂ)
5 brafn 28673 . . . . . 6 (𝐶 ∈ ℋ → (bra‘𝐶): ℋ⟶ℂ)
6 hfmmval 28465 . . . . . 6 ((((bra‘𝐴)‘𝐵) ∈ ℂ ∧ (bra‘𝐶): ℋ⟶ℂ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
74, 5, 6syl2an 494 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
873impa 1256 . . . 4 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
98fneq1d 5944 . . 3 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) Fn ℋ ↔ (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))) Fn ℋ))
103, 9mpbiri 248 . 2 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) Fn ℋ)
11 brafn 28673 . . . . 5 (𝐴 ∈ ℋ → (bra‘𝐴): ℋ⟶ℂ)
12 kbop 28679 . . . . 5 ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 ketbra 𝐶): ℋ⟶ ℋ)
13 fco 6020 . . . . 5 (((bra‘𝐴): ℋ⟶ℂ ∧ (𝐵 ketbra 𝐶): ℋ⟶ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
1411, 12, 13syl2an 494 . . . 4 ((𝐴 ∈ ℋ ∧ (𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ)) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
15143impb 1257 . . 3 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
16 ffn 6007 . . 3 (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)) Fn ℋ)
1715, 16syl 17 . 2 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)) Fn ℋ)
18 simpl1 1062 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐴 ∈ ℋ)
19 simpl2 1063 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐵 ∈ ℋ)
20 braval 28670 . . . . 5 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → ((bra‘𝐴)‘𝐵) = (𝐵 ·ih 𝐴))
2118, 19, 20syl2anc 692 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘𝐵) = (𝐵 ·ih 𝐴))
22 simpl3 1064 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐶 ∈ ℋ)
23 simpr 477 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝑥 ∈ ℋ)
24 braval 28670 . . . . 5 ((𝐶 ∈ ℋ ∧ 𝑥 ∈ ℋ) → ((bra‘𝐶)‘𝑥) = (𝑥 ·ih 𝐶))
2522, 23, 24syl2anc 692 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐶)‘𝑥) = (𝑥 ·ih 𝐶))
2621, 25oveq12d 6628 . . 3 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)) = ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)))
27 hicl 27804 . . . . . 6 ((𝐵 ∈ ℋ ∧ 𝐴 ∈ ℋ) → (𝐵 ·ih 𝐴) ∈ ℂ)
2819, 18, 27syl2anc 692 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (𝐵 ·ih 𝐴) ∈ ℂ)
2921, 28eqeltrd 2698 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘𝐵) ∈ ℂ)
3022, 5syl 17 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (bra‘𝐶): ℋ⟶ℂ)
31 hfmval 28470 . . . 4 ((((bra‘𝐴)‘𝐵) ∈ ℂ ∧ (bra‘𝐶): ℋ⟶ℂ ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
3229, 30, 23, 31syl3anc 1323 . . 3 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
33 hicl 27804 . . . . . 6 ((𝑥 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝑥 ·ih 𝐶) ∈ ℂ)
3423, 22, 33syl2anc 692 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (𝑥 ·ih 𝐶) ∈ ℂ)
35 ax-his3 27808 . . . . 5 (((𝑥 ·ih 𝐶) ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐴 ∈ ℋ) → (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
3634, 19, 18, 35syl3anc 1323 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
37123adant1 1077 . . . . . 6 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 ketbra 𝐶): ℋ⟶ ℋ)
38 fvco3 6237 . . . . . 6 (((𝐵 ketbra 𝐶): ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)))
3937, 38sylan 488 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)))
40 kbval 28680 . . . . . . 7 ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ ∧ 𝑥 ∈ ℋ) → ((𝐵 ketbra 𝐶)‘𝑥) = ((𝑥 ·ih 𝐶) · 𝐵))
4119, 22, 23, 40syl3anc 1323 . . . . . 6 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐵 ketbra 𝐶)‘𝑥) = ((𝑥 ·ih 𝐶) · 𝐵))
4241fveq2d 6157 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)) = ((bra‘𝐴)‘((𝑥 ·ih 𝐶) · 𝐵)))
43 hvmulcl 27737 . . . . . . 7 (((𝑥 ·ih 𝐶) ∈ ℂ ∧ 𝐵 ∈ ℋ) → ((𝑥 ·ih 𝐶) · 𝐵) ∈ ℋ)
4434, 19, 43syl2anc 692 . . . . . 6 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝑥 ·ih 𝐶) · 𝐵) ∈ ℋ)
45 braval 28670 . . . . . 6 ((𝐴 ∈ ℋ ∧ ((𝑥 ·ih 𝐶) · 𝐵) ∈ ℋ) → ((bra‘𝐴)‘((𝑥 ·ih 𝐶) · 𝐵)) = (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴))
4618, 44, 45syl2anc 692 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘((𝑥 ·ih 𝐶) · 𝐵)) = (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴))
4739, 42, 463eqtrd 2659 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴))
4828, 34mulcomd 10012 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
4936, 47, 483eqtr4d 2665 . . 3 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)))
5026, 32, 493eqtr4d 2665 . 2 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥))
5110, 17, 50eqfnfvd 6275 1 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384  w3a 1036   = wceq 1480  wcel 1987  cmpt 4678  ccom 5083   Fn wfn 5847  wf 5848  cfv 5852  (class class class)co 6610  cc 9885   · cmul 9892  chil 27643   · csm 27645   ·ih csp 27646   ·fn chft 27666  bracbr 27680   ketbra ck 27681
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4736  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6909  ax-cnex 9943  ax-mulcom 9951  ax-hilex 27723  ax-hfvmul 27729  ax-hfi 27803  ax-his3 27808
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2912  df-rex 2913  df-reu 2914  df-rab 2916  df-v 3191  df-sbc 3422  df-csb 3519  df-dif 3562  df-un 3564  df-in 3566  df-ss 3573  df-nul 3897  df-if 4064  df-pw 4137  df-sn 4154  df-pr 4156  df-op 4160  df-uni 4408  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-id 4994  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-iota 5815  df-fun 5854  df-fn 5855  df-f 5856  df-f1 5857  df-fo 5858  df-f1o 5859  df-fv 5860  df-ov 6613  df-oprab 6614  df-mpt2 6615  df-map 7811  df-hfmul 28460  df-bra 28576  df-kb 28577
This theorem is referenced by:  kbass6  28847
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