Theorem mgpval 19242

Description: Value of the multiplication group operation. (Contributed by Mario Carneiro, 21-Dec-2014.)

Hypotheses

Ref	Expression
mgpval.1	⊢ 𝑀 = (mulGrp‘𝑅)
mgpval.2	⊢ · = (.r‘𝑅)

Assertion

Ref	Expression
mgpval	⊢ 𝑀 = (𝑅 sSet ⟨(+g‘ndx), · ⟩)

Proof of Theorem mgpval

Dummy variable 𝑟 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		mgpval.1	. 2 ⊢ 𝑀 = (mulGrp‘𝑅)
2		id 22	. . . . 5 ⊢ (𝑟 = 𝑅 → 𝑟 = 𝑅)
3		fveq2 6670	. . . . . . 7 ⊢ (𝑟 = 𝑅 → (.r‘𝑟) = (.r‘𝑅))
4		mgpval.2	. . . . . . 7 ⊢ · = (.r‘𝑅)
5	3, 4	syl6eqr 2874	. . . . . 6 ⊢ (𝑟 = 𝑅 → (.r‘𝑟) = · )
6	5	opeq2d 4810	. . . . 5 ⊢ (𝑟 = 𝑅 → ⟨(+g‘ndx), (.r‘𝑟)⟩ = ⟨(+g‘ndx), · ⟩)
7	2, 6	oveq12d 7174	. . . 4 ⊢ (𝑟 = 𝑅 → (𝑟 sSet ⟨(+g‘ndx), (.r‘𝑟)⟩) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
8		df-mgp 19240	. . . 4 ⊢ mulGrp = (𝑟 ∈ V ↦ (𝑟 sSet ⟨(+g‘ndx), (.r‘𝑟)⟩))
9		ovex 7189	. . . 4 ⊢ (𝑅 sSet ⟨(+g‘ndx), · ⟩) ∈ V
10	7, 8, 9	fvmpt 6768	. . 3 ⊢ (𝑅 ∈ V → (mulGrp‘𝑅) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
11		fvprc 6663	. . . 4 ⊢ (¬ 𝑅 ∈ V → (mulGrp‘𝑅) = ∅)
12		reldmsets 16511	. . . . 5 ⊢ Rel dom sSet
13	12	ovprc1 7195	. . . 4 ⊢ (¬ 𝑅 ∈ V → (𝑅 sSet ⟨(+g‘ndx), · ⟩) = ∅)
14	11, 13	eqtr4d 2859	. . 3 ⊢ (¬ 𝑅 ∈ V → (mulGrp‘𝑅) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
15	10, 14	pm2.61i 184	. 2 ⊢ (mulGrp‘𝑅) = (𝑅 sSet ⟨(+g‘ndx), · ⟩)
16	1, 15	eqtri 2844	1 ⊢ 𝑀 = (𝑅 sSet ⟨(+g‘ndx), · ⟩)

Syntax hints:  ¬ wn 3   = wceq 1537   ∈ wcel 2114  Vcvv 3494  ∅c0 4291  ⟨cop 4573  ‘cfv 6355  (class class class)co 7156  ndxcnx 16480   sSet csts 16481  +_gcplusg 16565  ._rcmulr 16566  mulGrpcmgp 19239

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2793  ax-sep 5203  ax-nul 5210  ax-pow 5266  ax-pr 5330

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3773  df-dif 3939  df-un 3941  df-in 3943  df-ss 3952  df-nul 4292  df-if 4468  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4839  df-br 5067  df-opab 5129  df-mpt 5147  df-id 5460  df-xp 5561  df-rel 5562  df-cnv 5563  df-co 5564  df-dm 5565  df-iota 6314  df-fun 6357  df-fv 6363  df-ov 7159  df-oprab 7160  df-mpo 7161  df-sets 16490  df-mgp 19240

This theorem is referenced by:  mgpplusg  19243  mgplem  19244  mgpress  19250