학술저널
MINIMAL QUASI-F COVERS OF ÀX
- 충청수학회
- Journal of the Chungcheong Mathematical Society
- Volume 26, No. 1
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2013.02221 - 229 (9 pages)
- 2
We show that if X is a space such that ¯QF(X) =QF(¯X) and each stable Z(X)#-ultra¯lter has the countable inter- section property, then there is a homeomorphism hX : ÀQF(X) ¡! QF(ÀX) with rX = ©ÀX ± hX. Moreover, if ¯QF(X) = QF(¯X) and ÀE(X) = E(ÀX) or À¤(X) = ¤(ÀX), then ÀQF(X) = QF(ÀX).
1. Introduction
2. Quasi-F covers
3. Minimal quasi-F covers of ÀX
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