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Club guessing sequences and filters

  • Tetsuya Ishiu (a1)


We investigate club guessing sequences and filters. We prove that assuming V = L, there exists a strong club guessing sequence on μ if and only if μ is not ineffable for every uncountable regular cardinal μ. We also prove that for every uncountable regular cardinal μ, relative to the existence of a Woodin cardinal above μ, it is consistent that every tail club guessing ideal on μ is precipitous.



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Club guessing sequences and filters

  • Tetsuya Ishiu (a1)


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