Properties of some -dense-in-itself subsets.
Devi, Renuka V., Sivaraj, D., Chelvam, T.Tamizh (2004)
International Journal of Mathematics and Mathematical Sciences
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Devi, Renuka V., Sivaraj, D., Chelvam, T.Tamizh (2004)
International Journal of Mathematics and Mathematical Sciences
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Al-Nashef, B., Al-Zoubi, K. (2011)
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V. Jeyanthi, V. Renuka Devi, D. Sivaraj (2007)
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Akdağ, Metin (2007)
International Journal of Mathematics and Mathematical Sciences
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Rafał Filipów, Nikodem Mrożek, Ireneusz Recław, Piotr Szuca (2013)
Commentationes Mathematicae Universitatis Carolinae
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We show that the ideal of nowhere dense subsets of rationals cannot be extended to an analytic P-ideal, ideal nor maximal P-ideal. We also consider a problem of extendability to a non-meager P-ideals (in particular, to maximal P-ideals).
Dontchev, J., Rose, D. (1998)
Mathematica Pannonica
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Jiří Vanžura (1988)
Commentationes Mathematicae Universitatis Carolinae
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