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Theorem nn0rei 9586
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 9579 . 2 ℕ0 ⊆ ℝ
2 nn0re.1 . 2 𝐴 ∈ ℕ0
31, 2sselii 3245 1 𝐴 ∈ ℝ
Colors of variables:    wff set class
This proof depends on syntax axioms:   ∈ wcel 2209  ℝcr 8185  ℕ0cn0 9575
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-sep 4251  ax-cnex 8277  ax-resscn 8278  ax-1re 8280  ax-addrcl 8283  ax-rnegex 8295
This proof depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-sn 3715  df-int 3971  df-inn 9315  df-n0 9576
This theorem is used by:  nn0cni  9587  nn0le2xi  9625  nn0lele2xi  9626  numlt  9818  numltc  9819  decle  9827  decleh  9828  modsubi  13229  prmlem2  13264  log2ublem1  16233  log2ublog2  16236  birthdaylog2  16240  ppiublem1  16303  bpos1lem  16321  bpos1  16322
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