Latex and \sum

*To*: mathgroup at smc.vnet.net*Subject*: [mg77028] Latex and \sum*From*: "Martin Grossman" <martin.grossman at gmail.com>*Date*: Fri, 1 Jun 2007 02:39:08 -0400 (EDT)

Hi there, In Mathematica 6 I am having trouble using command ToExpression["input", TeXForm]. I want to use LaTex sign sum : \sum When I used ToExpression["\\sum _{i=a}^b x_i",TeXForm] it doesnt work. Other symbols like \frac{}{} work... Any solution? Thanks martin grossman