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Theorem vcass 28329
 Description: Associative law for the scalar product of a complex vector space. (Contributed by NM, 3-Nov-2006.) (New usage is discouraged.)
Hypotheses
Ref Expression
vciOLD.1 𝐺 = (1st𝑊)
vciOLD.2 𝑆 = (2nd𝑊)
vciOLD.3 𝑋 = ran 𝐺
Assertion
Ref Expression
vcass ((𝑊 ∈ CVecOLD ∧ (𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶𝑋)) → ((𝐴 · 𝐵)𝑆𝐶) = (𝐴𝑆(𝐵𝑆𝐶)))

Proof of Theorem vcass
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 vciOLD.1 . . . . . 6 𝐺 = (1st𝑊)
2 vciOLD.2 . . . . . 6 𝑆 = (2nd𝑊)
3 vciOLD.3 . . . . . 6 𝑋 = ran 𝐺
41, 2, 3vciOLD 28323 . . . . 5 (𝑊 ∈ CVecOLD → (𝐺 ∈ AbelOp ∧ 𝑆:(ℂ × 𝑋)⟶𝑋 ∧ ∀𝑥𝑋 ((1𝑆𝑥) = 𝑥 ∧ ∀𝑦 ∈ ℂ (∀𝑧𝑋 (𝑦𝑆(𝑥𝐺𝑧)) = ((𝑦𝑆𝑥)𝐺(𝑦𝑆𝑧)) ∧ ∀𝑧 ∈ ℂ (((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))))))
5 simpr 487 . . . . . . . . . . 11 ((((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥))) → ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
65ralimi 3147 . . . . . . . . . 10 (∀𝑧 ∈ ℂ (((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥))) → ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
76adantl 484 . . . . . . . . 9 ((∀𝑧𝑋 (𝑦𝑆(𝑥𝐺𝑧)) = ((𝑦𝑆𝑥)𝐺(𝑦𝑆𝑧)) ∧ ∀𝑧 ∈ ℂ (((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))) → ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
87ralimi 3147 . . . . . . . 8 (∀𝑦 ∈ ℂ (∀𝑧𝑋 (𝑦𝑆(𝑥𝐺𝑧)) = ((𝑦𝑆𝑥)𝐺(𝑦𝑆𝑧)) ∧ ∀𝑧 ∈ ℂ (((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))) → ∀𝑦 ∈ ℂ ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
98adantl 484 . . . . . . 7 (((1𝑆𝑥) = 𝑥 ∧ ∀𝑦 ∈ ℂ (∀𝑧𝑋 (𝑦𝑆(𝑥𝐺𝑧)) = ((𝑦𝑆𝑥)𝐺(𝑦𝑆𝑧)) ∧ ∀𝑧 ∈ ℂ (((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥))))) → ∀𝑦 ∈ ℂ ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
109ralimi 3147 . . . . . 6 (∀𝑥𝑋 ((1𝑆𝑥) = 𝑥 ∧ ∀𝑦 ∈ ℂ (∀𝑧𝑋 (𝑦𝑆(𝑥𝐺𝑧)) = ((𝑦𝑆𝑥)𝐺(𝑦𝑆𝑧)) ∧ ∀𝑧 ∈ ℂ (((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥))))) → ∀𝑥𝑋𝑦 ∈ ℂ ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
11103ad2ant3 1131 . . . . 5 ((𝐺 ∈ AbelOp ∧ 𝑆:(ℂ × 𝑋)⟶𝑋 ∧ ∀𝑥𝑋 ((1𝑆𝑥) = 𝑥 ∧ ∀𝑦 ∈ ℂ (∀𝑧𝑋 (𝑦𝑆(𝑥𝐺𝑧)) = ((𝑦𝑆𝑥)𝐺(𝑦𝑆𝑧)) ∧ ∀𝑧 ∈ ℂ (((𝑦 + 𝑧)𝑆𝑥) = ((𝑦𝑆𝑥)𝐺(𝑧𝑆𝑥)) ∧ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))))) → ∀𝑥𝑋𝑦 ∈ ℂ ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
124, 11syl 17 . . . 4 (𝑊 ∈ CVecOLD → ∀𝑥𝑋𝑦 ∈ ℂ ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)))
13 oveq2 7141 . . . . . 6 (𝑥 = 𝐶 → ((𝑦 · 𝑧)𝑆𝑥) = ((𝑦 · 𝑧)𝑆𝐶))
14 oveq2 7141 . . . . . . 7 (𝑥 = 𝐶 → (𝑧𝑆𝑥) = (𝑧𝑆𝐶))
1514oveq2d 7149 . . . . . 6 (𝑥 = 𝐶 → (𝑦𝑆(𝑧𝑆𝑥)) = (𝑦𝑆(𝑧𝑆𝐶)))
1613, 15eqeq12d 2836 . . . . 5 (𝑥 = 𝐶 → (((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)) ↔ ((𝑦 · 𝑧)𝑆𝐶) = (𝑦𝑆(𝑧𝑆𝐶))))
17 oveq1 7140 . . . . . . 7 (𝑦 = 𝐴 → (𝑦 · 𝑧) = (𝐴 · 𝑧))
1817oveq1d 7148 . . . . . 6 (𝑦 = 𝐴 → ((𝑦 · 𝑧)𝑆𝐶) = ((𝐴 · 𝑧)𝑆𝐶))
19 oveq1 7140 . . . . . 6 (𝑦 = 𝐴 → (𝑦𝑆(𝑧𝑆𝐶)) = (𝐴𝑆(𝑧𝑆𝐶)))
2018, 19eqeq12d 2836 . . . . 5 (𝑦 = 𝐴 → (((𝑦 · 𝑧)𝑆𝐶) = (𝑦𝑆(𝑧𝑆𝐶)) ↔ ((𝐴 · 𝑧)𝑆𝐶) = (𝐴𝑆(𝑧𝑆𝐶))))
21 oveq2 7141 . . . . . . 7 (𝑧 = 𝐵 → (𝐴 · 𝑧) = (𝐴 · 𝐵))
2221oveq1d 7148 . . . . . 6 (𝑧 = 𝐵 → ((𝐴 · 𝑧)𝑆𝐶) = ((𝐴 · 𝐵)𝑆𝐶))
23 oveq1 7140 . . . . . . 7 (𝑧 = 𝐵 → (𝑧𝑆𝐶) = (𝐵𝑆𝐶))
2423oveq2d 7149 . . . . . 6 (𝑧 = 𝐵 → (𝐴𝑆(𝑧𝑆𝐶)) = (𝐴𝑆(𝐵𝑆𝐶)))
2522, 24eqeq12d 2836 . . . . 5 (𝑧 = 𝐵 → (((𝐴 · 𝑧)𝑆𝐶) = (𝐴𝑆(𝑧𝑆𝐶)) ↔ ((𝐴 · 𝐵)𝑆𝐶) = (𝐴𝑆(𝐵𝑆𝐶))))
2616, 20, 25rspc3v 3615 . . . 4 ((𝐶𝑋𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (∀𝑥𝑋𝑦 ∈ ℂ ∀𝑧 ∈ ℂ ((𝑦 · 𝑧)𝑆𝑥) = (𝑦𝑆(𝑧𝑆𝑥)) → ((𝐴 · 𝐵)𝑆𝐶) = (𝐴𝑆(𝐵𝑆𝐶))))
2712, 26syl5 34 . . 3 ((𝐶𝑋𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝑊 ∈ CVecOLD → ((𝐴 · 𝐵)𝑆𝐶) = (𝐴𝑆(𝐵𝑆𝐶))))
28273coml 1123 . 2 ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶𝑋) → (𝑊 ∈ CVecOLD → ((𝐴 · 𝐵)𝑆𝐶) = (𝐴𝑆(𝐵𝑆𝐶))))
2928impcom 410 1 ((𝑊 ∈ CVecOLD ∧ (𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ ∧ 𝐶𝑋)) → ((𝐴 · 𝐵)𝑆𝐶) = (𝐴𝑆(𝐵𝑆𝐶)))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 398   ∧ w3a 1083   = wceq 1537   ∈ wcel 2114  ∀wral 3125   × cxp 5529  ran crn 5532  ⟶wf 6327  ‘cfv 6331  (class class class)co 7133  1st c1st 7665  2nd c2nd 7666  ℂcc 10513  1c1 10516   + caddc 10518   · cmul 10520  AbelOpcablo 28306  CVecOLDcvc 28320 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 2792  ax-sep 5179  ax-nul 5186  ax-pow 5242  ax-pr 5306  ax-un 7439 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 2653  df-clab 2799  df-cleq 2813  df-clel 2891  df-nfc 2959  df-ral 3130  df-rex 3131  df-rab 3134  df-v 3475  df-sbc 3753  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4270  df-if 4444  df-sn 4544  df-pr 4546  df-op 4550  df-uni 4815  df-br 5043  df-opab 5105  df-mpt 5123  df-id 5436  df-xp 5537  df-rel 5538  df-cnv 5539  df-co 5540  df-dm 5541  df-rn 5542  df-iota 6290  df-fun 6333  df-fn 6334  df-f 6335  df-fv 6339  df-ov 7136  df-1st 7667  df-2nd 7668  df-vc 28321 This theorem is referenced by:  vcz  28337  nvsass  28390
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