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

Theorem nnsscn 8883
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 8882 . 2  |-  NN  C_  RR
2 ax-resscn 7866 . 2  |-  RR  C_  CC
31, 2sstri 3156 1  |-  NN  C_  CC
Colors of variables: wff set class
Syntax hints:    C_ wss 3121   CCcc 7772   RRcr 7773   NNcn 8878
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-ext 2152  ax-sep 4107  ax-cnex 7865  ax-resscn 7866  ax-1re 7868  ax-addrcl 7871
This theorem depends on definitions:  df-bi 116  df-tru 1351  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-v 2732  df-in 3127  df-ss 3134  df-int 3832  df-inn 8879
This theorem is referenced by:  nnex  8884  nncn  8886  nncnd  8892  nn0addcl  9170  nn0mulcl  9171  dfz2  9284  nnexpcl  10489  fprodnncl  11573
  Copyright terms: Public domain W3C validator