Theorem nvm 30523

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 30515	. . . 4 ⊢ 𝑀 = ( /𝑔 ‘𝐺)
4		nvm.6	. . . 4 ⊢ 𝑁 = ( /𝑔 ‘𝐺)
5	3, 4	eqtr4i 2756	. . 3 ⊢ 𝑀 = 𝑁
6	5	oveqi 7432	. 2 ⊢ (𝐴𝑀𝐵) = (𝐴𝑁𝐵)
7	6	a1i 11	1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝑀𝐵) = (𝐴𝑁𝐵))

Syntax hints:   → wi 4   ∧ w3a 1084   = wceq 1533   ∈ wcel 2098  ‘cfv 6549  (class class class)co 7419   /_𝑔 cgs 30374  NrmCVeccnv 30466   +_𝑣 cpv 30467  BaseSetcba 30468   −_𝑣 cnsb 30471

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1905  ax-6 1963  ax-7 2003  ax-8 2100  ax-9 2108  ax-10 2129  ax-11 2146  ax-12 2166  ax-ext 2696  ax-rep 5286  ax-sep 5300  ax-nul 5307  ax-pow 5365  ax-pr 5429  ax-un 7741

This theorem depends on definitions:  df-bi 206  df-an 395  df-or 846  df-3an 1086  df-tru 1536  df-fal 1546  df-ex 1774  df-nf 1778  df-sb 2060  df-mo 2528  df-eu 2557  df-clab 2703  df-cleq 2717  df-clel 2802  df-nfc 2877  df-ne 2930  df-ral 3051  df-rex 3060  df-reu 3364  df-rab 3419  df-v 3463  df-sbc 3774  df-csb 3890  df-dif 3947  df-un 3949  df-in 3951  df-ss 3961  df-nul 4323  df-if 4531  df-pw 4606  df-sn 4631  df-pr 4633  df-op 4637  df-uni 4910  df-iun 4999  df-br 5150  df-opab 5212  df-mpt 5233  df-id 5576  df-xp 5684  df-rel 5685  df-cnv 5686  df-co 5687  df-dm 5688  df-rn 5689  df-res 5690  df-ima 5691  df-iota 6501  df-fun 6551  df-fn 6552  df-f 6553  df-f1 6554  df-fo 6555  df-f1o 6556  df-fv 6557  df-ov 7422  df-oprab 7423  df-mpo 7424  df-1st 7994  df-2nd 7995  df-grpo 30375  df-gdiv 30378  df-va 30477  df-vs 30481

This theorem is referenced by:  nvmval  30524