Theorem kbass2 29894

Description: Dirac bra-ket associative law (⟨𝐴 ∣ 𝐵⟩)⟨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.

Step	Hyp	Ref	Expression
1		ovex 7189	. . . 4 ⊢ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)) ∈ V
2		eqid 2821	. . . 4 ⊢ (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
3	1, 2	fnmpti 6491	. . 3 ⊢ (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))) Fn ℋ
4		bracl 29726	. . . . . 6 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → ((bra‘𝐴)‘𝐵) ∈ ℂ)
5		brafn 29724	. . . . . 6 ⊢ (𝐶 ∈ ℋ → (bra‘𝐶): ℋ⟶ℂ)
6		hfmmval 29516	. . . . . 6 ⊢ ((((bra‘𝐴)‘𝐵) ∈ ℂ ∧ (bra‘𝐶): ℋ⟶ℂ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
7	4, 5, 6	syl2an 597	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
8	7	3impa 1106	. . . 4 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = (𝑥 ∈ ℋ ↦ (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥))))
9	8	fneq1d 6446	. . 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))
10	3, 9	mpbiri 260	. 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) Fn ℋ)
11		brafn 29724	. . . . 5 ⊢ (𝐴 ∈ ℋ → (bra‘𝐴): ℋ⟶ℂ)
12		kbop 29730	. . . . 5 ⊢ ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 ketbra 𝐶): ℋ⟶ ℋ)
13		fco 6531	. . . . 5 ⊢ (((bra‘𝐴): ℋ⟶ℂ ∧ (𝐵 ketbra 𝐶): ℋ⟶ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
14	11, 12, 13	syl2an 597	. . . 4 ⊢ ((𝐴 ∈ ℋ ∧ (𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ)) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
15	14	3impb 1111	. . 3 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)): ℋ⟶ℂ)
16	15	ffnd 6515	. 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)) Fn ℋ)
17		simpl1 1187	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐴 ∈ ℋ)
18		simpl2 1188	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐵 ∈ ℋ)
19		braval 29721	. . . . 5 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → ((bra‘𝐴)‘𝐵) = (𝐵 ·ih 𝐴))
20	17, 18, 19	syl2anc 586	. . . 4 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘𝐵) = (𝐵 ·ih 𝐴))
21		simpl3 1189	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝐶 ∈ ℋ)
22		simpr 487	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → 𝑥 ∈ ℋ)
23		braval 29721	. . . . 5 ⊢ ((𝐶 ∈ ℋ ∧ 𝑥 ∈ ℋ) → ((bra‘𝐶)‘𝑥) = (𝑥 ·ih 𝐶))
24	21, 22, 23	syl2anc 586	. . . 4 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐶)‘𝑥) = (𝑥 ·ih 𝐶))
25	20, 24	oveq12d 7174	. . 3 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)) = ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)))
26		hicl 28857	. . . . . 6 ⊢ ((𝐵 ∈ ℋ ∧ 𝐴 ∈ ℋ) → (𝐵 ·ih 𝐴) ∈ ℂ)
27	18, 17, 26	syl2anc 586	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (𝐵 ·ih 𝐴) ∈ ℂ)
28	20, 27	eqeltrd 2913	. . . 4 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘𝐵) ∈ ℂ)
29	21, 5	syl 17	. . . 4 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (bra‘𝐶): ℋ⟶ℂ)
30		hfmval 29521	. . . 4 ⊢ ((((bra‘𝐴)‘𝐵) ∈ ℂ ∧ (bra‘𝐶): ℋ⟶ℂ ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
31	28, 29, 22, 30	syl3anc 1367	. . 3 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴)‘𝐵) · ((bra‘𝐶)‘𝑥)))
32		hicl 28857	. . . . . 6 ⊢ ((𝑥 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝑥 ·ih 𝐶) ∈ ℂ)
33	22, 21, 32	syl2anc 586	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (𝑥 ·ih 𝐶) ∈ ℂ)
34		ax-his3 28861	. . . . 5 ⊢ (((𝑥 ·ih 𝐶) ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐴 ∈ ℋ) → (((𝑥 ·ih 𝐶) ·ℎ 𝐵) ·ih 𝐴) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
35	33, 18, 17, 34	syl3anc 1367	. . . 4 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((𝑥 ·ih 𝐶) ·ℎ 𝐵) ·ih 𝐴) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
36	12	3adant1 1126	. . . . . 6 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 ketbra 𝐶): ℋ⟶ ℋ)
37		fvco3 6760	. . . . . 6 ⊢ (((𝐵 ketbra 𝐶): ℋ⟶ ℋ ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)))
38	36, 37	sylan 582	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)))
39		kbval 29731	. . . . . . 7 ⊢ ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ ∧ 𝑥 ∈ ℋ) → ((𝐵 ketbra 𝐶)‘𝑥) = ((𝑥 ·ih 𝐶) ·ℎ 𝐵))
40	18, 21, 22, 39	syl3anc 1367	. . . . . 6 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐵 ketbra 𝐶)‘𝑥) = ((𝑥 ·ih 𝐶) ·ℎ 𝐵))
41	40	fveq2d 6674	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘((𝐵 ketbra 𝐶)‘𝑥)) = ((bra‘𝐴)‘((𝑥 ·ih 𝐶) ·ℎ 𝐵)))
42		hvmulcl 28790	. . . . . . 7 ⊢ (((𝑥 ·ih 𝐶) ∈ ℂ ∧ 𝐵 ∈ ℋ) → ((𝑥 ·ih 𝐶) ·ℎ 𝐵) ∈ ℋ)
43	33, 18, 42	syl2anc 586	. . . . . 6 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝑥 ·ih 𝐶) ·ℎ 𝐵) ∈ ℋ)
44		braval 29721	. . . . . 6 ⊢ ((𝐴 ∈ ℋ ∧ ((𝑥 ·ih 𝐶) ·ℎ 𝐵) ∈ ℋ) → ((bra‘𝐴)‘((𝑥 ·ih 𝐶) ·ℎ 𝐵)) = (((𝑥 ·ih 𝐶) ·ℎ 𝐵) ·ih 𝐴))
45	17, 43, 44	syl2anc 586	. . . . 5 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((bra‘𝐴)‘((𝑥 ·ih 𝐶) ·ℎ 𝐵)) = (((𝑥 ·ih 𝐶) ·ℎ 𝐵) ·ih 𝐴))
46	38, 41, 45	3eqtrd 2860	. . . 4 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = (((𝑥 ·ih 𝐶) ·ℎ 𝐵) ·ih 𝐴))
47	27, 33	mulcomd 10662	. . . 4 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)) = ((𝑥 ·ih 𝐶) · (𝐵 ·ih 𝐴)))
48	35, 46, 47	3eqtr4d 2866	. . 3 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥) = ((𝐵 ·ih 𝐴) · (𝑥 ·ih 𝐶)))
49	25, 31, 48	3eqtr4d 2866	. 2 ⊢ (((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) ∧ 𝑥 ∈ ℋ) → ((((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶))‘𝑥) = (((bra‘𝐴) ∘ (𝐵 ketbra 𝐶))‘𝑥))
50	10, 16, 49	eqfnfvd 6805	1 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((bra‘𝐴)‘𝐵) ·fn (bra‘𝐶)) = ((bra‘𝐴) ∘ (𝐵 ketbra 𝐶)))

Syntax hints:   → wi 4   ∧ wa 398   ∧ w3a 1083   = wceq 1537   ∈ wcel 2114   ↦ cmpt 5146   ∘ ccom 5559   Fn wfn 6350  ⟶wf 6351  ‘cfv 6355  (class class class)co 7156  ℂcc 10535   · cmul 10542   ℋchba 28696   ·_ℎ csm 28698   ·_ih csp 28699   ·_fn chft 28719  bracbr 28733   ketbra ck 28734

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-rep 5190  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330  ax-un 7461  ax-cnex 10593  ax-mulcom 10601  ax-hilex 28776  ax-hfvmul 28782  ax-hfi 28856  ax-his3 28861

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-reu 3145  df-rab 3147  df-v 3496  df-sbc 3773  df-csb 3884  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-pw 4541  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-iun 4921  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-rn 5566  df-res 5567  df-ima 5568  df-iota 6314  df-fun 6357  df-fn 6358  df-f 6359  df-f1 6360  df-fo 6361  df-f1o 6362  df-fv 6363  df-ov 7159  df-oprab 7160  df-mpo 7161  df-map 8408  df-hfmul 29511  df-bra 29627  df-kb 29628

This theorem is referenced by:  kbass6  29898