Given a Polish space X and a countable collection of analytic hypergraphs on X, I consider the sigma-ideal generated by Borel anticliques for the hypergraphs in the family. It turns out that many of the quotient posets are proper. I investigate the forcing properties of these posets, certain natural operations on them, and prove some related dichotomies.
机构:
Hungarian Acad Sci, Alfred Renyi Inst Math, Budapest, Hungary
Eotvos Lorand Univ, Inst Math, MTA ELTE Lendulet Combinatorial Geometry Res Grp, Budapest, HungaryHungarian Acad Sci, Alfred Renyi Inst Math, Budapest, Hungary
Keszegh, Balazs
Palvolgyi, Domotor
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机构:
Eotvos Lorand Univ, Inst Math, MTA ELTE Lendulet Combinatorial Geometry Res Grp, Budapest, HungaryHungarian Acad Sci, Alfred Renyi Inst Math, Budapest, Hungary
机构:
Iowa State Univ, Dept Math, Ames, IA 50011 USA
Amer Inst Math, 600 E Brokaw Rd, San Jose, CA 95112 USAIowa State Univ, Dept Math, Ames, IA 50011 USA