Theorem nvm 30930

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 30922	. . . 4 ⊢ 𝑀 = ( /𝑔 ‘𝐺)
4		nvm.6	. . . 4 ⊢ 𝑁 = ( /𝑔 ‘𝐺)
5	3, 4	eqtr4i 2795	. . 3 ⊢ 𝑀 = 𝑁
6	5	oveqi 7421	. 2 ⊢ (𝐴𝑀𝐵) = (𝐴𝑁𝐵)
7	6	a1i 11	1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝑀𝐵) = (𝐴𝑁𝐵))

Syntax hints:   → wi 4   ∧ w3a 1101   = wceq 1567   ∈ wcel 2149  ‘cfv 6533  (class class class)co 7408   /_𝑔 cgs 30781  NrmCVeccnv 30873   +_𝑣 cpv 30874  BaseSetcba 30875   −_𝑣 cnsb 30878

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-rep 5239  ax-sep 5258  ax-nul 5268  ax-pow 5334  ax-pr 5402  ax-un 7730

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-reu 3377  df-rab 3424  df-v 3465  df-sbc 3754  df-csb 3862  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4490  df-pw 4566  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-iun 4959  df-br 5111  df-opab 5175  df-mpt 5194  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-iota 6489  df-fun 6535  df-fn 6536  df-f 6537  df-f1 6538  df-fo 6539  df-f1o 6540  df-fv 6541  df-ov 7411  df-oprab 7412  df-mpo 7413  df-1st 7982  df-2nd 7983  df-grpo 30782  df-gdiv 30785  df-va 30884  df-vs 30888

This theorem is referenced by:  nvmval  30931