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We outline a portfolio of novel iterable properties of c.c.c. and proper forcing notions and study its most important instantiations, Y-c.c. and Y-properness. These properties have interesting consequences for partition-type forcings and anticliques
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https://explore.openaire.eu/search/publication?articleId=doi_________::52539d0ba5e689689b4d75242263e0ec
Autor:
Zapletal, Jind��ich
We can generalize the definition of {\it splitting number } $s(\kappa )$ for $\kappa$ uncountable regular: $s(\kappa )=min\{ |\Cal S|:\Cal S\subset \Cal P(\kappa ) \forall a\in \kappa ^\kappa \exists b\in \Cal S |a\cap b|=|a\setminus b|=\kappa\}$ How
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17d07383fe9edd4e1269452d5d872beb
http://arxiv.org/abs/math/9210204
http://arxiv.org/abs/math/9210204