Parametrized ♦ principles
نویسندگان
چکیده
We will present a collection of guessing principles which have a similar relationship to ♦ as cardinal invariants of the continuum have to CH. The purpose is to provide a means for systematically analyzing ♦ and its consequences. It also provides for a unified approach for understanding the status of a number of consequences of CH and ♦ in models such as those of Laver, Miller, and Sacks.
منابع مشابه
Suslin Forcing and Parametrized ♦ Principles
By using finite support iteration of Suslin c.c.c forcing notions we construct several models which satisfy some ♦-like principles while other cardinal invariants are
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متن کامل2 5 A ug 2 00 6 Parametrized ♦ principles
We will present a collection of guessing principles which have a similar relationship to ♦ as cardinal invariants of the continuum have to CH. The purpose is to provide a means for systematically analyzing ♦ and its consequences. It also provides for a unified approach for understanding the status of a number of consequences of CH and ♦ in models such as those of Laver, Miller, and Sacks.
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