¨ On a problems arising from a question of Paul Erdos, Isfahan University of Technology, 1999-2000.
¨ Some combinatorial conditions on groups, Isfahan University of Technology, 2000-2001.
¨ On a question of Paul Erdos, Institute for Studies in Theoretical Physics and Mathematics (IPM), 2000-2001.
¨ A combinatorial problem in variety of groups Institute for Studies in Theoretical Physics and Mathematics (IPM), 2001-2002.
¨ Groups in which some equations have many solutions, Isfahan University of Technology, 2001-2002.
¨ Groups with many permutable products, Isfahan University of Technology, 2002-2003.
¨ Counting centralizers in finite groups, Isfahan University of Technology, 2002-2003.
¨ Groups with combinatorial conditions on subsets, Isfahan University of Technology, 2004-2005.
¨ Topological indices of nanotubes and rooted product of graphs, Center of Excellence of Algebraic Methods and Applications (CEAMA), 2006-2008.
¨ Topological indices of some nanotubes and composite graphs Center of Excellence of Algebraic Methods and Applications (CEAMA), 2006-2008.