Mailing Address   School phone number:  (+9821) 73225400-1   School Fax: (+9821) 77240302   School E_mail: math [AT] iust.ac.ir  Address: School of Mathematics, University of Science and Technology of Iran, University St., Hengam St., Resalat Square, Tehran, Iran.   Postal Code: 1684613114         School Dean   Samaneh Mashhadi-Assistant Professor Ph.D. Iran University of Science and Technology Research Interests: Phone: (+98)2173225402-(+98)2173225463 Office: Fifth floor, Rm 517 E-mail: Smashhadi AT iust.ac.ir       Vice Chancellor for Education and Graduate Studies   Zohreh Mostaghim-Assistant Professor Ph.D. Tehran University Research Interests: Group Theory, Combinatorics, Number Theory Phone: (+98)2173225430-(+98)2173225425 Office: Fifth floor, Rm 518 E-mail: Mostaghim AT iust.ac.ir     Vice Chancellor for Research   Reza Ahmadi-Assistant Professor Ph.D. City University of London Research Interests: System Reliability Modeling, Maintenance Optimization, Reliability Theory, Applied Operations Research Phone: (+98)2173225493 Office: Fourth floor, Rm 416 E-mail: Ahmadi_Reza AT iust.ac.ir     Director of Applied Mathematics Group   Reza Ahmadi-Assistant Professor Ph.D. City University of London Research Interests: System Reliability Modeling, Maintenance Optimization, Reliability Theory, Applied Operations Research Phone: (+98)2173225493 Office: Fourth floor, Rm 416 E-mail: Ahmadi_Reza AT iust.ac.ir     Director of Pure Mathematics Group   Ph.D Research Interests: Phone: Office: E-mail:     Director of Computer Science Group   Javad Vahidi-Associate Professor Ph.D. Mazandaran University Research Interests: Mathematics in Computer Science, Data Mining, Optimization Phone: (+98)2173225424 Office: Fourth floor, Rm 519 E-mail: vahidi AT iust.ac.ir J