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math.LO2002
Games with creatures
Saharon Shelah, Jindrich Zapletal
Many forcing notions obtained using the creature technology are naturally connected with certain integer games.
math.LO2002★ 1 cited
Duality and the pcf theory
Saharon Shelah, Jindrich Zapletal
We consider natural cardinal invariants hm_n and prove several duality theorems, saying roughly: if I is a suitably definable ideal and provably cov(I)>=hm_n, then non(I) is provab…