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Theorem reldmmpl 22025
Description: The multivariate polynomial constructor is a proper binary operator. (Contributed by Mario Carneiro, 21-Mar-2015.)
Assertion
Ref Expression
reldmmpl Rel dom mPoly

Proof of Theorem reldmmpl
Dummy variables 𝑓 𝑖 𝑟 𝑠 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-mpl 21948 . 2 mPoly = (𝑖 ∈ V, 𝑟 ∈ V ↦ (𝑖 mPwSer 𝑟) / 𝑠(𝑠s {𝑓 ∈ (Base‘𝑠) ∣ 𝑓 finSupp (0g𝑟)}))
21reldmmpo 7566 1 Rel dom mPoly
Colors of variables: wff setvar class
Syntax hints:  {crab 3432  Vcvv 3477  csb 3907   class class class wbr 5147  dom cdm 5688  Rel wrel 5693  cfv 6562  (class class class)co 7430   finSupp cfsupp 9398  Basecbs 17244  s cress 17273  0gc0g 17485   mPwSer cmps 21941   mPoly cmpl 21943
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1791  ax-4 1805  ax-5 1907  ax-6 1964  ax-7 2004  ax-8 2107  ax-9 2115  ax-10 2138  ax-11 2154  ax-12 2174  ax-ext 2705  ax-sep 5301  ax-nul 5311  ax-pr 5437
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1539  df-fal 1549  df-ex 1776  df-nf 1780  df-sb 2062  df-mo 2537  df-eu 2566  df-clab 2712  df-cleq 2726  df-clel 2813  df-nfc 2889  df-rab 3433  df-v 3479  df-dif 3965  df-un 3967  df-ss 3979  df-nul 4339  df-if 4531  df-sn 4631  df-pr 4633  df-op 4637  df-br 5148  df-opab 5210  df-xp 5694  df-rel 5695  df-dm 5698  df-oprab 7434  df-mpo 7435  df-mpl 21948
This theorem is referenced by:  mplval  22026  mplrcl  22031  selvval  22156  ismhp  22161  psdmplcl  22183  mplbaspropd  22253  ply1ascl  22276  mdegfval  26115
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