15 citations · 17 across the 2 of their papers we have counts for
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math.LO2006★ 2 cited
Winning the pressing down game but not Banach Mazur
Jakob Kellner, Matti Pauna, Saharon Shelah
Let be the set of those that have cofinality . It is consistent relative to a measurable that the nonempty player wins the pressing down game of length , bu…
math.LO2004★ 15 cited
Preserving Preservation
Jakob Kellner, Saharon Shelah
We present preservation theorems for countable support iteration of nep forcing notions satisfying ``old reals are not Lebesgue null'' and ``old reals are not meager''. (Nep is a g…
math.LO2002
Preserving Non-Null with Suslin+ forcing
Jakob Kellner
We introduce the notion of effective Axiom A and use it to show that some popular tree forcings are Suslin+. We introduce transitive nep and present a simplified version of Shelah'…