Atribución-NoComercial 4.0 InternacionalHdeib, H. Z.2019-06-282019-06-281981https://repositorio.unal.edu.co/handle/unal/42632The theory of normal spaces is treated in this paper. In section 1 we define a new type of mappings called paranormal, and we prove that a continuous mapping onto a normal space is paranormal if and only if its domain is normal. The section ends with the study of relativized notions of normality and paracompactness. In section 2 we study the normalitv of the products. Finally, section 3 contains the discussion of counterexamples relevant to the definition and theorems in the previous sections.application/pdfspaDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/On preservation of normalityArtículo de revistahttp://bdigital.unal.edu.co/32729/info:eu-repo/semantics/openAccessTheory of normal spacesparanormalnormalitv of the productsdefinition and theorems