Strongly semi-continuous functions and δ-stratifiable spaces
نویسندگان
چکیده
In [6], a sufficient condition for space to be ?-stratifiable was presented and it asked whether the is necessary. Jin et al [4] gave negative answer question by showing that with zero-dimensional. this paper, we show precisely an almost discrete space. Moreover, introduce notions of strongly lower (upper) semi-continuous functions, which characterizations spaces are presented.
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ژورنال
عنوان ژورنال: Filomat
سال: 2022
ISSN: ['2406-0933', '0354-5180']
DOI: https://doi.org/10.2298/fil2215315y