In many contexts it makes sense to mark such constructs up as selector http://www.w3.org/TR/MathML2/chapter4.html#contm.selector That is you consider a as a vector and a_i as the ith element, rather than thinking of a_1 a_2,... as separate variable names that just happen to have a similar presentation form. David ________________________________________________________________________ This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________Received on Monday, 3 October 2005 09:17:03 GMT
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