Resumen de New topologies between the usual and Niemytzki

Maha Saeed Alqahtani, Dina Abuzaid, Lutfi Kalantan

• We use the technique of Hattori to generate new topologies on the closed upper half plane which lie between the usual metric topology and the  Niemytzki topology. We study some of their fundamental properties and weaker versions of normality.