048. A new characterization for a topological space to be semi-T_1/2

Math. Journal: Comptes Rendus de L’Academie Bulgare de Sciences, Bulgaria.  54(2001), 5-6.
Authors: Caldas, M.

Abstract
A topological space $(X,\tau)$  is semi-$T_{1/2}$ if and only if, every subset of X is  $\tau$-semi-closed.


 

Filed Under: 2001-2002

Preprints

    Please, contact me for any preprint of papers.

Weather

    Niterói
    Mostly cloudy
    Mostly cloudy
    26°C
    real feel: 30°C
    humidity: 83%
    wind speed: 11 km/h S
    Forecast November 21, 2019
    day
    Partly sunny with thundershowers
    Partly sunny with thundershowers
    27°C
    wind speed: 11 km/h E
    Forecast November 22, 2019
    day
    Partly sunny with showers
    Partly sunny with showers
    28°C
    wind speed: 11 km/h ESE