SOME CARDINAL CHARACTERISTICS RELATED TO THE COVERING NUMBER AND THE UNIFORMITY OF THE MEAGRE IDEAL

被引:0
|
作者
Sonpanow, Nattapon [1 ]
Vejjajiva, Pimpen [1 ]
机构
[1] Chulalongkorn Univ, Fac Sci, Dept Math & Comp Sci, Bangkok 10330, Thailand
关键词
cardinal characteristic; covering number; uniformity;
D O I
10.4467/20842589RM.21.006.14373
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We extend the concepts of splitting, reaping, and independent families to families of functions and permutations on omega and define associated cardinal characteristics s(f), s(p), r(f), r(p), i(f), and i(p). We study relationships among cov(M), non(M), and these cardinals. In this paper, we show that s(f) = non(M) = s(p), r(f) = cov(M) <= r(p), and cov(M) <= i(f), i(p).
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页码:3 / 14
页数:12
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