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Message-ID: <1051120650.3ea6d40a13183@webmail.sapo.pt>
Date: 2003-04-23T17:57:30Z
From: Luis Silva
Subject: sum

Dear helpers

I have a list where each element is a matrix (the list is 
obtained with lapply). I want to sum those matrices. Is there a 
function to do that? The sum function sums all the elements...
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