Professor Z. Cai  <p>
Department of Mathematics<p>
Purdue University<p>
150 N. University Street<p>
West Lafayette, IN  47907   <p> 
Office: Math 450<p>
Phone:  (765)494-1921<p>
Fax: (765)494-0548<p>
E-Mail: <a href="mailto:caiz@purdue.edu">caiz@purdue.edu</a>

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