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Theorem eleenn 28872
Description: If 𝐴 is in (𝔼‘𝑁), then 𝑁 is a natural. (Contributed by Scott Fenton, 1-Jul-2013.)
Assertion
Ref Expression
eleenn (𝐴 ∈ (𝔼‘𝑁) → 𝑁 ∈ ℕ)

Proof of Theorem eleenn
StepHypRef Expression
1 df-ee 28867 . 2 𝔼 = (𝑛 ∈ ℕ ↦ (ℝ ↑m (1...𝑛)))
21mptrcl 6938 1 (𝐴 ∈ (𝔼‘𝑁) → 𝑁 ∈ ℕ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2111  cfv 6481  (class class class)co 7346  m cmap 8750  cr 11002  1c1 11004  cn 12122  ...cfz 13404  𝔼cee 28864
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 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-sep 5234  ax-nul 5244  ax-pr 5370
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-rab 3396  df-v 3438  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4284  df-if 4476  df-sn 4577  df-pr 4579  df-op 4583  df-uni 4860  df-br 5092  df-opab 5154  df-mpt 5173  df-xp 5622  df-rel 5623  df-cnv 5624  df-dm 5626  df-rn 5627  df-res 5628  df-ima 5629  df-iota 6437  df-fv 6489  df-ee 28867
This theorem is referenced by:  eleei  28873  eedimeq  28874  brbtwn  28875  brcgr  28876  eleesub  28887  eleesubd  28888  axsegconlem1  28893  axsegconlem8  28900  axeuclidlem  28938  brsegle  36141
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