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arxiv: math/9606227 · v1 · pith:3VNKVSZDnew · submitted 1996-06-15 · 🧮 math.LO

The distributivity numbers of of P(om) /fin and its square

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keywords omegadistributivityforcingcountableiterationlengthmathiasmodel
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We show that in a model obtained by forcing with a countable support iteration of length omega_2 of Mathias forcing h(2), the distributivity number of r.o.(P(omega)/fin)^2, is omega_1 but h, the one of P(omega)/fin, is omega_2.

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