New characterizations of $T_o$-spaces
| Autor: | Guia, Josep, Lledó, Rafael, Segura, Isabel |
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| Jazyk: | Catalan; Valencian |
| Rok vydání: | 1986 |
| Zdroj: | Collectanea Mathematica; 1986: Vol.: 37 Núm.: 3; p. 255-259 |
| Popis: | Making use of the essential derived operator, we present some new characterizations of $T_0$-spaces in the same way that the already known for $T_D$ and $ET_D$-spaces. It is also proved that an analogous treatment for $T_1, ET_1=R_0,T_{UD}$ and $ET_{UD}$ spaces is not valid. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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