triangularize is non-idempotent

• Subject: triangularize is non-idempotent
• From: Barton Willis
• Date: Sat, 9 Feb 2008 18:38:17 -0600

The triangularize function isn't idempotent. Is there a good reason for
this?

(%i13) matrix([2,4],[0,6]);
(%o13) matrix([2,4],[0,6])

(%i14) triangularize(%);
(%o14) matrix([2,4],[0,12])

(%i15) triangularize(%);
(%o15) matrix([2,4],[0,24])

Barton

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