Consistently there is no non trivial ccc forcing notion with the Sacks or Laver property

dc.creatorShelah, Saharon
dc.date2000-03-23
dc.date.accessioned2026-07-07T04:34:24Z
dc.date.available2026-07-07T04:34:24Z
dc.descriptionBoban Velickovic asked the following question: Is there a nontrivial forcing notion with the Sacks property which is also ccc? A ``definable'' variant of this question has been answered in [Sh:480] (math.LO/9303208): Every nontrivial Souslin forcing notion which has the Sacks property has an uncountable antichain. Here we show that it is consistent that every nontrivial forcing notion which has the Sacks property has an uncountable antichain. Independently, Velickovic has also proved the consistency of this statement.
dc.identifierhttps://arxiv.org/abs/math/0003139
dc.identifierhttp://arxiv.org/abs/math/0003139
dc.identifierCombinatorica 21 No. 2 (2001) 309--319
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/58887
dc.subjectLogic
dc.titleConsistently there is no non trivial ccc forcing notion with the Sacks or Laver property
dc.typetext

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