• Corpus ID: 246441973

On the bounding, splitting, and distributivity numbers

@inproceedings{Dow2022OnTB,
  title={On the bounding, splitting, and distributivity numbers},
  author={Alan Dow and Saharon Shelah},
  year={2022}
}
The cardinal invariants h, b, s of Ppωq are known to satisfy that ω1 ď h ď mintb, su. We prove that all inequalities can be strict. We also introduce a new upper bound for h and show that it can be less than s. The key method is to utilize finite support matrix iterations of ccc posets following [4]. 

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