Re: Product over an arbitrary index.

*To*: mathgroup at smc.vnet.net*Subject*: [mg68742] Re: Product over an arbitrary index.*From*: "Norbert Marxer" <marxer at mec.li>*Date*: Thu, 17 Aug 2006 04:18:55 -0400 (EDT)*References*: <ebujmf$6jo$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hello With your data li1 = {1, 4, 3}; m = 3; li2 = Table[i, {i, 1, m}]; all you need is Outer[f, li1, li2] /. List -> Times Best Regards Norbert Marxer www.mec.li quantieny at gmail.com wrote: > I have a function f(x,y) that I would like to compute the product > over indices i,j > where i goes from an arbitrary list {1,4,3} and j goes 1 to m. > > Is this possible in mathematica the function Product itself seems to > only work over a continous sequence and it is not clear how I can use > two set of indices. > > Additionally can I specify the product over an intersection or > complement of a list?. > > Thanks, > K Frou