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Theorem eleenn 28981
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 28975 . 2 𝔼 = (𝑛 ∈ ℕ ↦ (ℝ ↑m (1...𝑛)))
21mptrcl 6959 1 (𝐴 ∈ (𝔼‘𝑁) → 𝑁 ∈ ℕ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114  cfv 6500  (class class class)co 7368  m cmap 8775  cr 11037  1c1 11039  cn 12157  ...cfz 13435  𝔼cee 28972
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-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-xp 5638  df-rel 5639  df-cnv 5640  df-dm 5642  df-rn 5643  df-res 5644  df-ima 5645  df-iota 6456  df-fv 6508  df-ee 28975
This theorem is referenced by:  eleei  28982  eedimeq  28983  brbtwn  28984  brcgr  28985  eleesub  28996  eleesubd  28997  axsegconlem1  29002  axsegconlem8  29009  axeuclidlem  29047  brsegle  36321
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