Bounding by canonical functions, with CH
نویسندگان
چکیده
We show that that a certain class of semi-proper iterations does not add ω-sequences. As a result, starting from suitable large cardinals one can obtain a model in which the Continuum Hypothesis holds and every function from ω1 to ω1 is bounded by a canonical function on a club, and so ω1 is the ω2-nd canonical function.
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تاریخ انتشار 2002