Iranian Mathematical Society (IMS) Bulletin of the Iranian Mathematical Society 1017-060X 38 3 2012 09 15 On generalized topologies arising from mappings553 565 en Vladimir Pavlovic University of Nis, Faculty of Sciences and Mathematics Aleksandar S. Cvetkovi' c Department of Mathematics and Informatics, Faculty of Mechancial Engineering, University of Belgrade 2010 07 31 Generalized topologies generalized neighborhood systems product of generalized topologies