Theorem mgpval 20207

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 23	. . . . 5 ⊢ (𝑟 = 𝑅 → 𝑟 = 𝑅)
3		fveq2 6871	. . . . . . 7 ⊢ (𝑟 = 𝑅 → (.r‘𝑟) = (.r‘𝑅))
4		mgpval.2	. . . . . . 7 ⊢ · = (.r‘𝑅)
5	3, 4	eqtr4di 2818	. . . . . 6 ⊢ (𝑟 = 𝑅 → (.r‘𝑟) = · )
6	5	opeq2d 4840	. . . . 5 ⊢ (𝑟 = 𝑅 → ⟨(+g‘ndx), (.r‘𝑟)⟩ = ⟨(+g‘ndx), · ⟩)
7	2, 6	oveq12d 7418	. . . 4 ⊢ (𝑟 = 𝑅 → (𝑟 sSet ⟨(+g‘ndx), (.r‘𝑟)⟩) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
8		df-mgp 20205	. . . 4 ⊢ mulGrp = (𝑟 ∈ V ↦ (𝑟 sSet ⟨(+g‘ndx), (.r‘𝑟)⟩))
9		ovex 7433	. . . 4 ⊢ (𝑅 sSet ⟨(+g‘ndx), · ⟩) ∈ V
10	7, 8, 9	fvmpt 6979	. . 3 ⊢ (𝑅 ∈ V → (mulGrp‘𝑅) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
11		fvprc 6863	. . . 4 ⊢ (¬ 𝑅 ∈ V → (mulGrp‘𝑅) = ∅)
12		reldmsets 17213	. . . . 5 ⊢ Rel dom sSet
13	12	ovprc1 7439	. . . 4 ⊢ (¬ 𝑅 ∈ V → (𝑅 sSet ⟨(+g‘ndx), · ⟩) = ∅)
14	11, 13	eqtr4d 2803	. . 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 2788	1 ⊢ 𝑀 = (𝑅 sSet ⟨(+g‘ndx), · ⟩)

Syntax hints:  ¬ wn 3   = wceq 1563   ∈ wcel 2145  Vcvv 3457  ∅c0 4288  ⟨cop 4591  ‘cfv 6525  (class class class)co 7400   sSet csts 17211  ndxcnx 17241  +_gcplusg 17298  ._rcmulr 17299  mulGrpcmgp 20204

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2737  ax-sep 5250  ax-nul 5260  ax-pr 5394

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-nf 1807  df-sb 2094  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-ral 3080  df-rex 3090  df-rab 3418  df-v 3459  df-dif 3910  df-un 3912  df-in 3914  df-ss 3924  df-nul 4289  df-if 4484  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4868  df-br 5105  df-opab 5167  df-mpt 5186  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-iota 6481  df-fun 6527  df-fv 6533  df-ov 7403  df-oprab 7404  df-mpo 7405  df-sets 17212  df-mgp 20205

This theorem is referenced by:  mgpplusg  20208  mgpbas  20209  mgpsca  20210  mgptset  20211  mgpds  20213  mgpress  20214