Journal of the Korean Society of Mathematical Education Series B: Theoretical Mathematics and Pedagogical Mathematics / Journal of the Korean Society of Mathematical Education Series B: Theoretical Mathematics and Pedagogical Mathematics, (P)3059-0604; (E)3059-1309
1999, v.6 no.1, pp.13-16
Goo, Yoon-Hoe
Ry, Dae-Hee
Goo,,
Y.
, &
Ry,,
D.
(1999). . , 6(1), 13-16.
Abstract
We introduce the notion of the <TEX>$\omega$</TEX>-derived set and <TEX>$\omega$</TEX>-dense, and investigate some of their properties.
- keywords
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<tex> $\omega$</tex>-derived set,
<tex> $\omega$</tex>-dense