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MathGroup Archive 2005

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another Bug in Reduce ?

  • To: mathgroup at
  • Subject: [mg60487] another Bug in Reduce ?
  • From: Peter Pein <petsie at>
  • Date: Sun, 18 Sep 2005 01:15:45 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Dear group,

in message <dba4l5$elr$1 at> (07/16 2005), Mukhtar Bekkali
described a problem which involved Root[.] in dependance of a parameter.

This revealed another difference in the Reduce algorithms of versions
5.1 and 5.2.

Please have a look at or

In this case, version 5.1 did the better Job (and faster too).


P.S. the strange looking test for the root being real became necessary,
because Im[#]==0& did not work. (?)

Peter Pein, Berlin
GnuPG Key ID: 0xA34C5A82

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