Title فشردگي صفر مجموعه هاي اصلي كراندار در فضاهاي كاملا منظم Type Thesis Keywords bounded, zero-set Abstract In this thesis, as a generalization of theorem by W. G. McArthur and V. V. Uspenskii, we present that every bounded, full zero-set F is compact. Researchers Mehrdad Karavan jahromi (Primary advisor) , Taher Yazdanpanah (Advisor)