Mathematics – Logic
Scientific paper
1994-08-15
Arch. Math. Logic 35 (1996), 299--313
Mathematics
Logic
Scientific paper
We prove that the Sacks forcing collapses the continuum onto the dominating
number d, answering the question of Carlson and Laver. Next we prove that if a
proper forcing of the size at most continuum collapses omega_2 then it forces
diamond_{omega_1} .
Rosłanowski Andrzej
Shelah Saharon
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