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rdf:type
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Description
| - With every sigma-ideal I on a Polish space we associate the sigma-ideal I* generated by the closed sets in I. We study the forcing notions of Borel sets modulo the respective sigma-ideals I and I* and find connections between their forcing properties. To this end, we associate to a sigma-ideal on a Polish space an ideal on a countable set and show how forcing properties of the forcing depend on combinatorial properties of the ideal. We also study the I-I or constant property of sigma-ideals. i.e., the property that every Borel function defined on a Borel positive set can be restricted to a positive Borel set on which it either 1-1 or constant. We prove the following dichotomy: if I is a sigma-ideal generated by closed sets, then either the forcing P(I) adds a Cohen real, or else I has the 1-1 or constant property.
- With every sigma-ideal I on a Polish space we associate the sigma-ideal I* generated by the closed sets in I. We study the forcing notions of Borel sets modulo the respective sigma-ideals I and I* and find connections between their forcing properties. To this end, we associate to a sigma-ideal on a Polish space an ideal on a countable set and show how forcing properties of the forcing depend on combinatorial properties of the ideal. We also study the I-I or constant property of sigma-ideals. i.e., the property that every Borel function defined on a Borel positive set can be restricted to a positive Borel set on which it either 1-1 or constant. We prove the following dichotomy: if I is a sigma-ideal generated by closed sets, then either the forcing P(I) adds a Cohen real, or else I has the 1-1 or constant property. (en)
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Title
| - Forcing properties of ideals of closed sets
- Forcing properties of ideals of closed sets (en)
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skos:prefLabel
| - Forcing properties of ideals of closed sets
- Forcing properties of ideals of closed sets (en)
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skos:notation
| - RIV/67985840:_____/11:00371062!RIV12-AV0-67985840
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http://linked.open...avai/predkladatel
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(IAA100190902), Z(AV0Z10190503)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/67985840:_____/11:00371062
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - forcing; ideals; Katetov order (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of Symbolic Logic
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Sabok, M.
- Zapletal, Jindřich
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http://linked.open...ain/vavai/riv/wos
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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is http://linked.open...avai/riv/vysledek
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