Talks at Departments

• Dept. of Math., IUT,  “Blowing-ups and resolution of  Singularities”  October, 29, 2001

• Dept. of Math., IUT,  “Regular models for fiber products of arithmetic surfaces”, November, 30, 1998.

• Dept. of Math., IUT,  “The Arithmetic of Elliptic Curves”, December, 8, 1997.

• Dept. of Math., “Lectures in Algebraic Geometry”,  May, 7, 21, 28, 1997.

• Dept. of Mathematical Sciences, Durham University,  UK,  “ Reduction of  Elliptic Curves”, June, 21,  1995.

• Dept. of Mathematical Sciences, Durham University,  UK,“ Resolution  of singularities” Febrary, 1995.

• Gathering of Iranian PhD Students, University of Leeds, UK, “Desingularization of Arithmetic surfaces”,

       November, 25, 1995.

• Gathering of Iranian PhD Students, UMIST,Manchester,UK, “Blowing-up”, December,  18, 1994.