A non-D-space with large extent |
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Authors: | Tetsuya Ishiu |
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Institution: | Department of Mathematics and Statistics, Miami University, Oxford, OH 45056, USA |
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Abstract: | We proved that ?+ implies the existence of a non-D-space whose all closed subspace F satisfies e(F)=L(F). The existence of such a space under MA+¬CH or PFA is also discussed. |
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Keywords: | primary 54D20 secondary 03E35 |
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