More on the cut and choose game

preprint1994arXivOpen access

Abstract

We improve some ancient results of Velickovic on the cut and choose (c&c) game on complete Boolean algebras. (1) If Nonempty has a winning strategy for c&c game on BB then BB is semiproper. (2) If Nonempty has a winning strategy and BB has 2ℵ02^{\aleph _0} -c.c. then Nonempty has a winning strategy in the descending chain game. (3) Cons (BB is ℵ1\aleph _1-distributive implies Nonempty has a winning strategy in c&c on BB ) We also give some new examples of forcings where Nonempty has or does not have a winning strategy in c&c game.

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