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%{\Large{\centerline{\bfseries\sffamily UNIVERSITY OF GUELPH}}}
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\parbox[b]{.333\linewidth}{{\footnotesize{\scshape{
\href{https://www.math.uwaterloo.ca/~hwolkowi/}
{Henry Wolkowicz}}}}\\
{\footnotesize{\scshape{Full Professor}}}\\
{\footnotesize{\scshape{Phone : 519-888-4567 x 45589}}}\\
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{\footnotesize{\scshape{Department of Combinatorics and Optimization}}} \\
{\footnotesize{\scshape{University of Waterloo}}}\\
{\footnotesize{\scshape{Waterloo, Ontario N2L~3G1, }}}\\
{\footnotesize{\scshape{CANADA}}}
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\begin{flushright}
August 8, 2022
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To Whom it Concern:\\
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{\center{
	\textbf{Re: Visit of PhD student David Torregrosa-Belen}}}

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This letter is in support of the six month visit, Dec. 2022 to June,
2023, of Phd student David Torregrosa-Belen.
The visit is for research work in Continuous Optimization with Walaa
Moursi and Henry Wolkowicz, in the Department  of Combinatorics and  Optimization.

David is a Phd student of
Francisco Javier Arag\'on-Artacho,
Department of Mathematics, University of Alicante, Spain.
\url{https://sites.google.com/site/franaragon/home}.
Professor Arag\'on-Artacho is an international well known young researcher who
already has an excellent well established research record
\url{https://www.dropbox.com/s/llspwquh3q4vn9n/CV%20English.pdf}.
	His research overlaps that of
both research areas of 
Henry and Walaa in modern optimization algorithms as well as stability
analysis.

We (Henry and Walaa) are certain of a mutually beneficial visit for us
and our research group.


Sincerely yours,

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\includegraphics[height=1 in,angle=0]{signature-cropped.pdf}
 

Henry Wolkowicz (on behalf of 
\href{https://www.math.uwaterloo.ca/~hwolkowi/}
{Henry Wolkowicz} and 
\href{https://uwaterloo.ca/combinatorics-and-optimization/about/people/wmoursi}{
Walaa M.\ Moursi}).
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