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In capacity as Professor of Mathematics at Fudan University¢ŸI'm writing to
recommend Mr. Wang¢ŸGesintosyour PhD program in Computer Science. I have known
Mr. Wang since his sophomore year of college¢Ÿand have acted as his thesis
advisormentor. In my experience¢Ÿhe is a gifteddiligent student¢Ÿand an admirably
hard worker.

¡¡¡¡Wang is an impressive student because he has been forced to overcome the
significant challenge of a serious illness during his freshman year. When I
first met Wang in my Discrete Math class¢Ÿhe did not appear to be anything
special to me. While his exam scores were good¢Ÿthey were not as high as I would
now expect of him. What I didn't know then was that due to his illness¢ŸWang was
attempting to take all of the difficult early mathematics courses at one
time¢Ÿincluding Discrete Mathematics¢ŸAdvanced Mathematics¢ŸLinear Algebra¢Ÿand
Possibilities. While most students found preparing for just one set of these
exams difficult¢ŸWang was overwhelmed by four of them. But in the end¢Ÿhe achieved
an impressive score on the final exam¢Ÿwhich made me conscious of his unusual
determination he demonstrates when confronting difficult challenges.

¡¡¡¡Mr. WangI have often talked about a variety of mathematicscomputer science
conceptsproblems. During these discussions¢ŸI always found him to be delightfully
intelligent. Not only does he quickly understand the conceptsproblems presented
to him¢Ÿhe is able to analyze these problemspresent solutions. But perhaps most
important is that Wang's thinking is intensely rigorous. When looking at any
question¢Ÿhe carefully scrutinizes itif he finds any uncertain issue

¡¡¡¡he clears them up immediately. I believe this kind of thought is essential
to become an excellent computer programmer.

¡¡¡¡Serving as his thesis advisor¢ŸI had a first-hand opportunity to observe the
way in which Wang's mind works. In his senor thesis¢ŸMr. Wang mainly discussed
two challenging questions in regards to¡åANN¡å¡£ In our books in China¢Ÿknowledge of
ANNits uses are very rare. Few people in China have studied this
topicconsequently¢Ÿthe materials that are available on ANN are limited. Working
on this difficult project¢Ÿnot only did Mr. Wang rise to the challenge¢Ÿbut he
went abovebeyond the call of duty to analyze his secondary sourcestest them for
accuracy in practice. In this way¢Ÿhe found mistakes in the book that we use. His
diligencehard work made me extremely proud of him.