> < ^ Date: Tue, 29 Aug 1995 22:37:00 +1000
> < ^ From: Smith@wintermute.anu.edu.au <Michael >
> ^ Subject: object * list for list empty?

I recently noticed that using

NewListOfMatrices := BaseChange * OldListOfMatrices;

it is a bit faster than the construct I had been using:

NewListOfMatrices := List(OldListOfMatrices, x -> BaseChange * x);

After extensive modifications to some code I'm working on, I noticed that
these two statements differ slightly in effect: notably when the list
happens to be empty. Should the behaviour of '*' be changed so that 

SomeMatrix * [ ];
SomeScalar * [ ];

return empty lists?

Michael. 

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Michael.Smith@maths.anu.edu.au - Mathematics - Australian National University
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