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Theorem kbass2 30052
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 7203 . . . 4 (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)) ∈ V
2 eqid 2738 . . . 4 (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
31, 2fnmpti 6480 . . 3 (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))) Fn ℋ
4 bracl 29884 . . . . . 6 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → ((bra‘𝐴)‘𝐵) ∈ ℂ)
5 brafn 29882 . . . . . 6 (𝐶 ∈ ℋ → (bra‘𝐶): ℋ⟶ℂ)
6 hfmmval 29674 . . . . . 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 599 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
873impa 1111 . . . 4 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
98fneq1d 6431 . . 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 261 . 2 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) Fn ℋ)
11 brafn 29882 . . . . 5 (𝐴 ∈ ℋ → (bra‘𝐴): ℋ⟶ℂ)
12 kbop 29888 . . . . 5 ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 ketbra 𝐶): ℋ⟶ ℋ)
13 fco 6528 . . . . 5 (((bra‘𝐴): ℋ⟶ℂ ∧ (𝐵 ketbra 𝐶): ℋ⟶ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
1411, 12, 13syl2an 599 . . . 4 ((𝐴 ∈ ℋ ∧ (𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ)) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
15143impb 1116 . . 3 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
1615ffnd 6505 . 2 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)) Fn ℋ)
17 simpl1 1192 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐴 ∈ ℋ)
18 simpl2 1193 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐵 ∈ ℋ)
19 braval 29879 . . . . 5 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → ((bra‘𝐴)‘𝐵) = (𝐵 ·ih 𝐴))
2017, 18, 19syl2anc 587 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘𝐵) = (𝐵 ·ih 𝐴))
21 simpl3 1194 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐶 ∈ ℋ)
22 simpr 488 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝑥 ∈ ℋ)
23 braval 29879 . . . . 5 ((𝐶 ∈ ℋ ∧ 𝑥 ∈ ℋ) → ((bra‘𝐶)‘𝑥) = (𝑥 ·ih 𝐶))
2421, 22, 23syl2anc 587 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐶)‘𝑥) = (𝑥 ·ih 𝐶))
2520, 24oveq12d 7188 . . 3 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)) = ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)))
26 hicl 29015 . . . . . 6 ((𝐵 ∈ ℋ ∧ 𝐴 ∈ ℋ) → (𝐵 ·ih 𝐴) ∈ ℂ)
2718, 17, 26syl2anc 587 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (𝐵 ·ih 𝐴) ∈ ℂ)
2820, 27eqeltrd 2833 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘𝐵) ∈ ℂ)
2921, 5syl 17 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (bra‘𝐶): ℋ⟶ℂ)
30 hfmval 29679 . . . 4 ((((bra‘𝐴)‘𝐵) ∈ ℂ ∧ (bra‘𝐶): ℋ⟶ℂ ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
3128, 29, 22, 30syl3anc 1372 . . 3 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
32 hicl 29015 . . . . . 6 ((𝑥 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝑥 ·ih 𝐶) ∈ ℂ)
3322, 21, 32syl2anc 587 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (𝑥 ·ih 𝐶) ∈ ℂ)
34 ax-his3 29019 . . . . 5 (((𝑥 ·ih 𝐶) ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐴 ∈ ℋ) → (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
3533, 18, 17, 34syl3anc 1372 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
36123adant1 1131 . . . . . 6 ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 ketbra 𝐶): ℋ⟶ ℋ)
37 fvco3 6767 . . . . . 6 (((𝐵 ketbra 𝐶): ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)))
3836, 37sylan 583 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)))
39 kbval 29889 . . . . . . 7 ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ ∧ 𝑥 ∈ ℋ) → ((𝐵 ketbra 𝐶)‘𝑥) = ((𝑥 ·ih 𝐶) · 𝐵))
4018, 21, 22, 39syl3anc 1372 . . . . . 6 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐵 ketbra 𝐶)‘𝑥) = ((𝑥 ·ih 𝐶) · 𝐵))
4140fveq2d 6678 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)) = ((bra‘𝐴)‘((𝑥 ·ih 𝐶) · 𝐵)))
42 hvmulcl 28948 . . . . . . 7 (((𝑥 ·ih 𝐶) ∈ ℂ ∧ 𝐵 ∈ ℋ) → ((𝑥 ·ih 𝐶) · 𝐵) ∈ ℋ)
4333, 18, 42syl2anc 587 . . . . . 6 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝑥 ·ih 𝐶) · 𝐵) ∈ ℋ)
44 braval 29879 . . . . . 6 ((𝐴 ∈ ℋ ∧ ((𝑥 ·ih 𝐶) · 𝐵) ∈ ℋ) → ((bra‘𝐴)‘((𝑥 ·ih 𝐶) · 𝐵)) = (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴))
4517, 43, 44syl2anc 587 . . . . 5 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘((𝑥 ·ih 𝐶) · 𝐵)) = (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴))
4638, 41, 453eqtrd 2777 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = (((𝑥 ·ih 𝐶) · 𝐵) ·ih 𝐴))
4727, 33mulcomd 10740 . . . 4 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
4835, 46, 473eqtr4d 2783 . . 3 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)))
4925, 31, 483eqtr4d 2783 . 2 (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥))
5010, 16, 49eqfnfvd 6812 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 399  w3a 1088   = wceq 1542  wcel 2114  cmpt 5110  ccom 5529   Fn wfn 6334  wf 6335  cfv 6339  (class class class)co 7170  cc 10613   · cmul 10620  chba 28854   · csm 28856   ·ih csp 28857   ·fn chft 28877  bracbr 28891   ketbra ck 28892
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1975  ax-7 2020  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2162  ax-12 2179  ax-ext 2710  ax-rep 5154  ax-sep 5167  ax-nul 5174  ax-pow 5232  ax-pr 5296  ax-un 7479  ax-cnex 10671  ax-mulcom 10679  ax-hilex 28934  ax-hfvmul 28940  ax-hfi 29014  ax-his3 29019
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 847  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1787  df-nf 1791  df-sb 2075  df-mo 2540  df-eu 2570  df-clab 2717  df-cleq 2730  df-clel 2811  df-nfc 2881  df-ne 2935  df-ral 3058  df-rex 3059  df-reu 3060  df-rab 3062  df-v 3400  df-sbc 3681  df-csb 3791  df-dif 3846  df-un 3848  df-in 3850  df-ss 3860  df-nul 4212  df-if 4415  df-pw 4490  df-sn 4517  df-pr 4519  df-op 4523  df-uni 4797  df-iun 4883  df-br 5031  df-opab 5093  df-mpt 5111  df-id 5429  df-xp 5531  df-rel 5532  df-cnv 5533  df-co 5534  df-dm 5535  df-rn 5536  df-res 5537  df-ima 5538  df-iota 6297  df-fun 6341  df-fn 6342  df-f 6343  df-f1 6344  df-fo 6345  df-f1o 6346  df-fv 6347  df-ov 7173  df-oprab 7174  df-mpo 7175  df-map 8439  df-hfmul 29669  df-bra 29785  df-kb 29786
This theorem is referenced by:  kbass6  30056
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