DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   Pari
      <mathematics, tool> A system for symbolic mathematics,
      especially number theory.
      Version 1.37 for Unix, Macintosh, MS-DOS, Amiga.
      E-mail: <pari@alioth.greco-prog.fr>.
      (ftp://math.ucla.edu/pub/pari).
      (1995-04-12)