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Internet Message Format  |  1992-10-16  |  580 b 
  1. Path: sparky!uunet!ogicse!uwm.edu!ux1.cso.uiuc.edu!roundup.crhc.uiuc.edu!focus!hougen
  2. From: hougen@focus.csl.uiuc.edu (Darrell Roy Hougen)
  3. Newsgroups: sci.math
  4. Subject: Re: Do you know ?
  5. Message-ID: <1bnvb6INNdv3@roundup.crhc.uiuc.edu>
  6. Date: 17 Oct 92 02:55:34 GMT
  7. Article-I.D.: roundup.1bnvb6INNdv3
  8. References: <1992Oct16.050019.25103@noose.ecn.purdue.edu>
  9. Organization: Center for Reliable and High-Performance Computing, University of Illinois at Urbana-Champaign
  10. Lines: 4
  11. NNTP-Posting-Host: focus.csl.uiuc.edu
  12.  
  13. f(x) = {0 if x is rational
  14.        {1 if x is irrational
  15.  
  16. Darrell
  17.