Re: Latex and \sum

• To: mathgroup at smc.vnet.net
• Subject: [mg77183] Re: Latex and \sum
• From: "Jean-Marc Gulliet" <jeanmarc.gulliet at gmail.com>
• Date: Tue, 5 Jun 2007 06:46:44 -0400 (EDT)
• References: <f3of1o$ong$1@smc.vnet.net> <465FE63D.4070405@gmail.com>

On 6/4/07, Martin Grossman <martin.grossman at gmail.com> wrote:
> Hi,
>
> Yes you are right, but I didnt find any solution to this...:-( Any ideas?
>
> martin

Unfortunately not. Usually I typeset my documents directly in LaTeX so
I have not really investigated the issue.

Hope someone else will bring an answer soon.

Cheers,
Jean-Marc

> On 6/1/07, Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com> wrote:
> > Martin Grossman wrote:
> > > 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
> > >
> >
> > The issue, though that does not solve the problem, seems to be related
> > to the way Mathematica parses the "i=a" part.
> >
> > In[1]:= ToExpression["\\sum_{i}^b x_i", TeXForm]
> >
> > Out[1]= Sum[Subscript[x, i], {i, 1, b}]
> >
> > In[2]:= ToExpression["\\sum_{i=1}^b x_i", TeXForm]
> >
> > During evaluation of In[2]:= ToExpression::esntx:Could not parse \
> > \sum_{i=1}^b x_i as Mathematica input.
> >
> > Out[2]= $Failed > > > > In[3]:= ToExpression["\\sum_{a}^b x_i", TeXForm] > > > > Out[3]= b*Subscript[x, i] > > > > In[4]:= ToExpression[ToString[\sum _ {n = 1}^m n^2], TeXForm] > > > > During evaluation of In[4]:= ToExpression::esntx:Could not parse \sum \ > > _{n=1}^m n^2 as Mathematica input. > > > > Out[4]=$Failed
> >
> > In[5]:= ToExpression[
> >   ToString[\frac {(x + y)^2} {\sqrt {x y}}], TeXForm]
> >
> > Out[5]= (x + y)^2/Sqrt[xy]
> >
> > Regards,
> > Jean-Marc
> >
>



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