MathGroup Archive 2004

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  • To: mathgroup at
  • Subject: [mg52844] Minors
  • From: "Robert M. Mazo" <mazo at>
  • Date: Tue, 14 Dec 2004 06:00:05 -0500 (EST)
  • Organization: University of Oregon
  • Sender: owner-wri-mathgroup at

The Minors command gives, as the (i,j) minor af an nxn matrix, what
ordinary mathematical notation calls the (n-i+1,n-j+1) minor .  I know
how to work around this.  It is explained on pg. 1195 of The
Mathematica Book (version 4).  My question here is, why did the
programmers of Mathematica define Minors this unconventional way?
They usually had a good reason for their programming quirks, but I
can't think of a reason for this one.  Can anyone enlighten me?

	Robert Mazo
	mazo at

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