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Theorem nnsscn 8977
Description: The positive integers are a subset of the complex numbers. (Contributed by NM, 2-Aug-2004.)
Assertion
Ref Expression
nnsscn ℕ ⊆ ℂ

Proof of Theorem nnsscn
StepHypRef Expression
1 nnssre 8976 . 2 ℕ ⊆ ℝ
2 ax-resscn 7954 . 2 ℝ ⊆ ℂ
31, 2sstri 3188 1 ℕ ⊆ ℂ
Colors of variables: wff set class
Syntax hints:  wss 3153  cc 7860  cr 7861  cn 8972
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 4147  ax-cnex 7953  ax-resscn 7954  ax-1re 7956  ax-addrcl 7959
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-v 2762  df-in 3159  df-ss 3166  df-int 3871  df-inn 8973
This theorem is referenced by:  nnex  8978  nncn  8980  nncnd  8986  nn0addcl  9265  nn0mulcl  9266  dfz2  9379  nnexpcl  10610  fprodnncl  11740
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