Hello, FeynmanDiagram!
You wrote on Tue, 19 Dec 2006 07:46:01 -0800:

F Does anyone know how to easily perform the mathematical
F operation of convolution in Excel? Thanks!

Further to my earlier reply. If cost is a problem, symbolic
algebra programs are available for Linux tho' I have not used
any of them lately. MuPad is one that comes to mind.

James Silverton
Potomac, Maryland

E-mail, with obvious alterations:
not.jim.silverton.at.comcast.not