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Theorem mgpval 20090
Description: Value of the multiplication group operation. (Contributed by Mario Carneiro, 21-Dec-2014.)
Hypotheses
Ref Expression
mgpval.1 𝑀 = (mulGrp‘𝑅)
mgpval.2 · = (.r𝑅)
Assertion
Ref Expression
mgpval 𝑀 = (𝑅 sSet ⟨(+g‘ndx), · ⟩)

Proof of Theorem mgpval
Dummy variable 𝑟 is distinct from all other variables.
StepHypRef Expression
1 mgpval.1 . 2 𝑀 = (mulGrp‘𝑅)
2 id 22 . . . . 5 (𝑟 = 𝑅𝑟 = 𝑅)
3 fveq2 6842 . . . . . . 7 (𝑟 = 𝑅 → (.r𝑟) = (.r𝑅))
4 mgpval.2 . . . . . . 7 · = (.r𝑅)
53, 4eqtr4di 2790 . . . . . 6 (𝑟 = 𝑅 → (.r𝑟) = · )
65opeq2d 4838 . . . . 5 (𝑟 = 𝑅 → ⟨(+g‘ndx), (.r𝑟)⟩ = ⟨(+g‘ndx), · ⟩)
72, 6oveq12d 7386 . . . 4 (𝑟 = 𝑅 → (𝑟 sSet ⟨(+g‘ndx), (.r𝑟)⟩) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
8 df-mgp 20088 . . . 4 mulGrp = (𝑟 ∈ V ↦ (𝑟 sSet ⟨(+g‘ndx), (.r𝑟)⟩))
9 ovex 7401 . . . 4 (𝑅 sSet ⟨(+g‘ndx), · ⟩) ∈ V
107, 8, 9fvmpt 6949 . . 3 (𝑅 ∈ V → (mulGrp‘𝑅) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
11 fvprc 6834 . . . 4 𝑅 ∈ V → (mulGrp‘𝑅) = ∅)
12 reldmsets 17104 . . . . 5 Rel dom sSet
1312ovprc1 7407 . . . 4 𝑅 ∈ V → (𝑅 sSet ⟨(+g‘ndx), · ⟩) = ∅)
1411, 13eqtr4d 2775 . . 3 𝑅 ∈ V → (mulGrp‘𝑅) = (𝑅 sSet ⟨(+g‘ndx), · ⟩))
1510, 14pm2.61i 182 . 2 (mulGrp‘𝑅) = (𝑅 sSet ⟨(+g‘ndx), · ⟩)
161, 15eqtri 2760 1 𝑀 = (𝑅 sSet ⟨(+g‘ndx), · ⟩)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3   = wceq 1542  wcel 2114  Vcvv 3442  c0 4287  cop 4588  cfv 6500  (class class class)co 7368   sSet csts 17102  ndxcnx 17132  +gcplusg 17189  .rcmulr 17190  mulGrpcmgp 20087
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5243  ax-nul 5253  ax-pr 5379
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rab 3402  df-v 3444  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-opab 5163  df-mpt 5182  df-id 5527  df-xp 5638  df-rel 5639  df-cnv 5640  df-co 5641  df-dm 5642  df-iota 6456  df-fun 6502  df-fv 6508  df-ov 7371  df-oprab 7372  df-mpo 7373  df-sets 17103  df-mgp 20088
This theorem is referenced by:  mgpplusg  20091  mgpbas  20092  mgpsca  20093  mgptset  20094  mgpds  20096  mgpress  20097
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