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Theorem plybss 26173
Description: Reverse closure of the parameter 𝑆 of the polynomial set function. (Contributed by Mario Carneiro, 22-Jul-2014.)
Assertion
Ref Expression
plybss (𝐹 ∈ (Poly‘𝑆) → 𝑆 ⊆ ℂ)

Proof of Theorem plybss
Dummy variables 𝑘 𝑎 𝑛 𝑧 𝑓 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-ply 26167 . . 3 Poly = (𝑥 ∈ 𝒫 ℂ ↦ {𝑓 ∣ ∃𝑛 ∈ ℕ0𝑎 ∈ ((𝑥 ∪ {0}) ↑m0)𝑓 = (𝑧 ∈ ℂ ↦ Σ𝑘 ∈ (0...𝑛)((𝑎𝑘) · (𝑧𝑘)))})
21mptrcl 6953 . 2 (𝐹 ∈ (Poly‘𝑆) → 𝑆 ∈ 𝒫 ℂ)
32elpwid 4551 1 (𝐹 ∈ (Poly‘𝑆) → 𝑆 ⊆ ℂ)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1542  wcel 2114  {cab 2715  wrex 3062  cun 3888  wss 3890  𝒫 cpw 4542  {csn 4568  cmpt 5167  cfv 6494  (class class class)co 7362  m cmap 8768  cc 11031  0cc0 11033   · cmul 11038  0cn0 12432  ...cfz 13456  cexp 14018  Σcsu 15643  Polycply 26163
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 5232  ax-nul 5242  ax-pr 5372
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-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-pw 4544  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-br 5087  df-opab 5149  df-mpt 5168  df-xp 5632  df-rel 5633  df-cnv 5634  df-dm 5636  df-rn 5637  df-res 5638  df-ima 5639  df-iota 6450  df-fv 6502  df-ply 26167
This theorem is referenced by:  elply  26174  plyf  26177  plyssc  26179  plyaddlem  26194  plymullem  26195  plysub  26198  dgrlem  26208  coeidlem  26216  plyco  26220  plycj  26256  plycjOLD  26258  plyreres  26263  plydivlem3  26276  plydivlem4  26277  elmnc  43588
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