Theorem nvm 26880

Description: Vector subtraction in terms of group division operation. (Contributed by NM, 15-Feb-2008.) (New usage is discouraged.)

Hypotheses

Ref	Expression
nvm.1	⊢ 𝑋 = (BaseSet‘𝑈)
nvm.2	⊢ 𝐺 = ( +𝑣 ‘𝑈)
nvm.3	⊢ 𝑀 = ( −𝑣 ‘𝑈)
nvm.6	⊢ 𝑁 = ( /𝑔 ‘𝐺)

Assertion

Ref	Expression
nvm	⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝑀𝐵) = (𝐴𝑁𝐵))

Proof of Theorem nvm

Step	Hyp	Ref	Expression
1		nvm.2	. . . . 5 ⊢ 𝐺 = ( +𝑣 ‘𝑈)
2		nvm.3	. . . . 5 ⊢ 𝑀 = ( −𝑣 ‘𝑈)
3	1, 2	vsfval 26872	. . . 4 ⊢ 𝑀 = ( /𝑔 ‘𝐺)
4		nvm.6	. . . 4 ⊢ 𝑁 = ( /𝑔 ‘𝐺)
5	3, 4	eqtr4i 2635	. . 3 ⊢ 𝑀 = 𝑁
6	5	oveqi 6562	. 2 ⊢ (𝐴𝑀𝐵) = (𝐴𝑁𝐵)
7	6	a1i 11	1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝑀𝐵) = (𝐴𝑁𝐵))

Syntax hints:   → wi 4   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977  ‘cfv 5804  (class class class)co 6549   /_𝑔 cgs 26730  NrmCVeccnv 26823   +_𝑣 cpv 26824  BaseSetcba 26825   −_𝑣 cnsb 26828

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-ral 2901  df-rex 2902  df-reu 2903  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-1st 7059  df-2nd 7060  df-grpo 26731  df-gdiv 26734  df-va 26834  df-vs 26838

This theorem is referenced by:  nvmval  26881