dotproduct of empty lists --> 1x0 matrix

• Subject: dotproduct of empty lists --> 1x0 matrix
• From: Barton Willis
• Date: Mon, 7 Jan 2013 14:27:01 +0000

Using default values for option variables, the dotproduct of empty lists is a 1x0 matrix:

  (%i1) [].[];
  (%o1) matrix([])

I speculated that [].[] would be an empty sum of an empty product, so [].[] --> 0. What's the logic
behind [].[] --> matrix([])?

--Barton

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