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Theorem nn0rei 9254
Description: A nonnegative integer is a real number. (Contributed by NM, 14-May-2003.)
Hypothesis
Ref Expression
nn0re.1 𝐴 ∈ ℕ0
Assertion
Ref Expression
nn0rei 𝐴 ∈ ℝ

Proof of Theorem nn0rei
StepHypRef Expression
1 nn0ssre 9247 . 2 0 ⊆ ℝ
2 nn0re.1 . 2 𝐴 ∈ ℕ0
31, 2sselii 3177 1 𝐴 ∈ ℝ
Colors of variables: wff set class
Syntax hints:  wcel 2164  cr 7873  0cn0 9243
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-ext 2175  ax-sep 4148  ax-cnex 7965  ax-resscn 7966  ax-1re 7968  ax-addrcl 7971  ax-rnegex 7983
This theorem depends on definitions:  df-bi 117  df-tru 1367  df-nf 1472  df-sb 1774  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-ral 2477  df-rex 2478  df-v 2762  df-un 3158  df-in 3160  df-ss 3167  df-sn 3625  df-int 3872  df-inn 8985  df-n0 9244
This theorem is referenced by:  nn0cni  9255  nn0le2xi  9293  nn0lele2xi  9294  numlt  9475  numltc  9476  decle  9484  decleh  9485
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