R help - Apr 2011 - Plotting an Underbrace in R

I need to include some mathematical expressions in a plot I am creating in
R, one of which requires an underbrace, which in LaTeX would be written like


\underbrace{T \cdots T}_{n times}

There does not appear to be a provision for this in plotmath, and I cannot
find anything on the topic in the R-help archive or in a Google search.  I
would appreciate some help with this.
Michael P. McAssey, Ph.D.
Statistics for Life Sciences, Department of Mathematics
Faculty of Sciences, Vrije Universiteit Amsterdam
De Boelelaan 1081a, 1081 HV Amsterdam, The Netherlands
Office: S-230, W&N building
Tel: +31 (0)20 598 7724
Fax: +31 (0)20 598 7653
Mobile: +31 (0)62 113 8600
http://www.few.vu.nl/~mmy700/

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Michael McAssey <mpmcassey <at> gmail.com> writes:
> 
> I need to include some mathematical expressions in a plot I am creating in
> R, one of which requires an underbrace, which in LaTeX would be written
like
> 
> \underbrace{T \cdots T}_{n times}
> 
> There does not appear to be a provision for this in plotmath, and I cannot
> find anything on the topic in the R-help archive or in a Google search.  I
> would appreciate some help with this.
  Does

<http://yihui.name/en/wp-content/uploads/2010/02/lyx-pgfsweave-demo.pdf>

 help at all?