> < ^ Date: Thu, 24 Mar 1994 11:50:00 +0100
> < ^ From: Steve Linton <sal@dcs.st-and.ac.uk >
^ Subject: Multiplying transformations

I have discoverd a useful trick for multiplying transformation
represented as image liists in GAP. Since a number of people have
been enquiring about this and related subjects I thought it might be
appropriate to mention it here.

The obvious way to multiply lits images1 and images2,
returning a list imagesProd is something like

imagesProd := [];
for i in images1 do

However the same result can be achieved rather faster by

imagesProd := images2{images1};

where the loop is provided by the kernel.


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