Evading predictors with creatures

Author:

Spinas Otmar

Abstract

We continue the theory of evasion and prediction which was introduced by Blass and developed by Brendle, Shelah, and Laflamme. We prove that for arbitrary sufficiently different f , g ω ω f,g\in ^{\omega }\omega , it is consistent to have e g > e f {\mathfrak {e}}_{g}>{\mathfrak {e}}_{f} , where e f {\mathfrak {e}}_{f} is the evasion number of the space n > ω f ( n ) \prod _{n>\omega }f(n) . For this we apply a variant of Shelah’s “creature forcing”.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

Reference13 articles.

1. Cardinal characteristics and the product of countably many infinite cyclic groups;Blass, Andreas;J. Algebra,1994

2. Evasion and prediction—the Specker phenomenon and Gross spaces;Brendle, Jörg;Forum Math.,1995

3. Evasion and prediction. II;Brendle, Jörg;J. London Math. Soc. (2),1996

4. Many simple cardinal invariants;Goldstern, Martin;Arch. Math. Logic,1993

5. [L] C. Laflamme, Combinatorial aspects of 𝐹_{𝜎} filters with an application to 𝒩-sets, Proc. AMS, to appear.

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