ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  nnsscn Unicode version

Theorem nnsscn 8995
Description: The positive integers are a subset of the complex numbers. (Contributed by NM, 2-Aug-2004.)
Assertion
Ref Expression
nnsscn  |-  NN  C_  CC

Proof of Theorem nnsscn
StepHypRef Expression
1 nnssre 8994 . 2  |-  NN  C_  RR
2 ax-resscn 7971 . 2  |-  RR  C_  CC
31, 2sstri 3192 1  |-  NN  C_  CC
Colors of variables: wff set class
Syntax hints:    C_ wss 3157   CCcc 7877   RRcr 7878   NNcn 8990
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 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-ext 2178  ax-sep 4151  ax-cnex 7970  ax-resscn 7971  ax-1re 7973  ax-addrcl 7976
This theorem depends on definitions:  df-bi 117  df-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-v 2765  df-in 3163  df-ss 3170  df-int 3875  df-inn 8991
This theorem is referenced by:  nnex  8996  nncn  8998  nncnd  9004  nn0addcl  9284  nn0mulcl  9285  dfz2  9398  nnexpcl  10644  fprodnncl  11775  mpodvdsmulf1o  15226  fsumdvdsmul  15227
  Copyright terms: Public domain W3C validator