On Marczewski sets and some ideals.
Balcerzak, M. (1993)
Acta Mathematica Universitatis Comenianae. New Series
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Balcerzak, M. (1993)
Acta Mathematica Universitatis Comenianae. New Series
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Marek Balcerzak, Joanna Rzepecka (1998)
Acta Universitatis Carolinae. Mathematica et Physica
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Miroslav Repický (2000)
Commentationes Mathematicae Universitatis Carolinae
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We prove that if there exists a Cohen real over a model, then the family of perfect sets coded in the model has a disjoint refinement by perfect sets.