Large cardinals with few measures

被引:8
作者
Apter, Arthur W. [1 ]
Cummings, James
Hamkins, Joel David
机构
[1] CUNY Bernard M Baruch Coll, Dept Math, New York, NY 10010 USA
[2] Carnegie Mellon Univ, Dept Math Sci, Pittsburgh, PA 15213 USA
[3] CUNY, Grad Ctr, Math Program, New York, NY 10016 USA
[4] CUNY Coll Staten Isl, Staten Isl, NY 10314 USA
关键词
supercompact cardinal; strongly compact cardinal; measurable cardinal; normal measure;
D O I
10.1090/S0002-9939-07-08786-2
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We show, assuming the consistency of one measurable cardinal, that it is consistent for there to be exactly kappa(+) many normal measures on the least measurable cardinal.. This answers a question of Stewart Baldwin. The methods generalize to higher cardinals, showing that the number of lambda strong compactness or lambda supercompactness measures on P-kappa(lambda) can be exactly lambda(+) if lambda > kappa is a regular cardinal. We conclude with a list of open questions. Our proofs use a critical observation due to James Cummings.
引用
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页码:2291 / 2300
页数:10
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