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Theorem nvf 30807
Description: Mapping for the norm function. (Contributed by NM, 11-Nov-2006.) (New usage is discouraged.)
Hypotheses
Ref Expression
nvf.1 𝑋 = (BaseSet‘𝑈)
nvf.6 𝑁 = (normCV𝑈)
Assertion
Ref Expression
nvf (𝑈 ∈ NrmCVec → 𝑁:𝑋⟶ℝ)

Proof of Theorem nvf
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 nvf.1 . . 3 𝑋 = (BaseSet‘𝑈)
2 eqid 2761 . . 3 ( +𝑣𝑈) = ( +𝑣𝑈)
3 eqid 2761 . . 3 ( ·𝑠OLD𝑈) = ( ·𝑠OLD𝑈)
4 eqid 2761 . . 3 (0vec𝑈) = (0vec𝑈)
5 nvf.6 . . 3 𝑁 = (normCV𝑈)
61, 2, 3, 4, 5nvi 30761 . 2 (𝑈 ∈ NrmCVec → (⟨( +𝑣𝑈), ( ·𝑠OLD𝑈)⟩ ∈ CVecOLD𝑁:𝑋⟶ℝ ∧ ∀𝑥𝑋 (((𝑁𝑥) = 0 → 𝑥 = (0vec𝑈)) ∧ ∀𝑦 ∈ ℂ (𝑁‘(𝑦( ·𝑠OLD𝑈)𝑥)) = ((abs‘𝑦) · (𝑁𝑥)) ∧ ∀𝑦𝑋 (𝑁‘(𝑥( +𝑣𝑈)𝑦)) ≤ ((𝑁𝑥) + (𝑁𝑦)))))
76simp2d 1155 1 (𝑈 ∈ NrmCVec → 𝑁:𝑋⟶ℝ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1097   = wceq 1559  wcel 2141  wral 3075  cop 4587   class class class wbr 5099  wf 6511  cfv 6515  (class class class)co 7390  cc 11066  cr 11067  0cc0 11068   + caddc 11071   · cmul 11073  cle 11212  abscabs 15242  CVecOLDcvc 30705  NrmCVeccnv 30731   +𝑣 cpv 30732  BaseSetcba 30733   ·𝑠OLD cns 30734  0veccn0v 30735  normCVcnmcv 30737
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-10 2174  ax-11 2190  ax-12 2211  ax-ext 2733  ax-rep 5226  ax-sep 5245  ax-nul 5255  ax-pr 5389  ax-un 7712
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-nf 1803  df-sb 2090  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3076  df-rex 3086  df-reu 3367  df-rab 3414  df-v 3455  df-sbc 3745  df-csb 3853  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4480  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-iun 4950  df-br 5100  df-opab 5162  df-mpt 5181  df-id 5540  df-xp 5651  df-rel 5652  df-cnv 5653  df-co 5654  df-dm 5655  df-rn 5656  df-res 5657  df-ima 5658  df-iota 6471  df-fun 6517  df-fn 6518  df-f 6519  df-f1 6520  df-fo 6521  df-f1o 6522  df-fv 6523  df-ov 7393  df-oprab 7394  df-1st 7964  df-2nd 7965  df-vc 30706  df-nv 30739  df-va 30742  df-ba 30743  df-sm 30744  df-0v 30745  df-nmcv 30747
This theorem is referenced by:  nvcl  30808  imsdf  30836  nmcvcn  30842  sspn  30883  hilnormi  31310
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