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Theorem nv2 27821
Description: A vector plus itself is two times the vector. (Contributed by NM, 9-Feb-2008.) (New usage is discouraged.)
Hypotheses
Ref Expression
nvdi.1 𝑋 = (BaseSet‘𝑈)
nvdi.2 𝐺 = ( +𝑣𝑈)
nvdi.4 𝑆 = ( ·𝑠OLD𝑈)
Assertion
Ref Expression
nv2 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋) → (𝐴𝐺𝐴) = (2𝑆𝐴))

Proof of Theorem nv2
StepHypRef Expression
1 eqid 2770 . . 3 (1st𝑈) = (1st𝑈)
21nvvc 27804 . 2 (𝑈 ∈ NrmCVec → (1st𝑈) ∈ CVecOLD)
3 nvdi.2 . . . 4 𝐺 = ( +𝑣𝑈)
43vafval 27792 . . 3 𝐺 = (1st ‘(1st𝑈))
5 nvdi.4 . . . 4 𝑆 = ( ·𝑠OLD𝑈)
65smfval 27794 . . 3 𝑆 = (2nd ‘(1st𝑈))
7 nvdi.1 . . . 4 𝑋 = (BaseSet‘𝑈)
87, 3bafval 27793 . . 3 𝑋 = ran 𝐺
94, 6, 8vc2OLD 27757 . 2 (((1st𝑈) ∈ CVecOLD𝐴𝑋) → (𝐴𝐺𝐴) = (2𝑆𝐴))
102, 9sylan 561 1 ((𝑈 ∈ NrmCVec ∧ 𝐴𝑋) → (𝐴𝐺𝐴) = (2𝑆𝐴))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 382   = wceq 1630  wcel 2144  cfv 6031  (class class class)co 6792  1st c1st 7312  2c2 11271  CVecOLDcvc 27747  NrmCVeccnv 27773   +𝑣 cpv 27774  BaseSetcba 27775   ·𝑠OLD cns 27776
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1869  ax-4 1884  ax-5 1990  ax-6 2056  ax-7 2092  ax-8 2146  ax-9 2153  ax-10 2173  ax-11 2189  ax-12 2202  ax-13 2407  ax-ext 2750  ax-rep 4902  ax-sep 4912  ax-nul 4920  ax-pow 4971  ax-pr 5034  ax-un 7095  ax-1cn 10195
This theorem depends on definitions:  df-bi 197  df-an 383  df-or 827  df-3an 1072  df-tru 1633  df-ex 1852  df-nf 1857  df-sb 2049  df-eu 2621  df-mo 2622  df-clab 2757  df-cleq 2763  df-clel 2766  df-nfc 2901  df-ne 2943  df-ral 3065  df-rex 3066  df-reu 3067  df-rab 3069  df-v 3351  df-sbc 3586  df-csb 3681  df-dif 3724  df-un 3726  df-in 3728  df-ss 3735  df-nul 4062  df-if 4224  df-sn 4315  df-pr 4317  df-op 4321  df-uni 4573  df-iun 4654  df-br 4785  df-opab 4845  df-mpt 4862  df-id 5157  df-xp 5255  df-rel 5256  df-cnv 5257  df-co 5258  df-dm 5259  df-rn 5260  df-res 5261  df-ima 5262  df-iota 5994  df-fun 6033  df-fn 6034  df-f 6035  df-f1 6036  df-fo 6037  df-f1o 6038  df-fv 6039  df-ov 6795  df-oprab 6796  df-1st 7314  df-2nd 7315  df-2 11280  df-vc 27748  df-nv 27781  df-va 27784  df-ba 27785  df-sm 27786  df-0v 27787  df-nmcv 27789
This theorem is referenced by:  ipidsq  27899  minvecolem2  28065
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