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Internet Message Format  |  1993-01-06  |  724 b 
  1. Path: sparky!uunet!spool.mu.edu!sdd.hp.com!sgiblab!nec-gw!nec-tyo!wnoc-tyo-news!icot32!ss151.icot.or.jp!ss151!chik
  2. From: chik@icot.or.jp (Takashi Chikayama)
  3. Newsgroups: comp.lang.prolog
  4. Subject: Why can't integers become principal functors?
  5. Message-ID: <CHIK.93Jan7114812@ss38.icot.or.jp>
  6. Date: 7 Jan 93 02:48:12 GMT
  7. Sender: news@ss151.icot.or.jp
  8. Reply-To: chikayama@icot.or.jp
  9. Distribution: comp
  10. Organization: Institute for New Generation Computer Technology, Tokyo, Japan.
  11. Lines: 6
  12.  
  13. Can somebody explain why integers cannot be the principal functor of
  14. non-atomic functors?  Are there any theoretical reasons?  Any
  15. implementational difficulties?  Or just for compatibility with
  16. previous implementations?
  17.  
  18. Takashi Chikayama
  19.