Nice aleph_1 generated non-P-points, I
Saharon Shelah

TL;DR
This paper introduces a new family of ultrafilters on natural numbers that are distinct from P-points, demonstrating their possible existence independently of P-points under certain conditions.
Contribution
It defines and proves the existence of ultrafilters that are far from P-points, expanding understanding of ultrafilter diversity.
Findings
Existence of non-P-point ultrafilters under reasonable conditions
Construction of ultrafilters far from P-points
Potential independence from P-points in set theory
Abstract
We define a family of a (non-principal) ultrafilters on N which are, in a sense, far from P-points. We first under reasonable conditions, prove its existence. In a continuation we shall prove that such a point may exist while no P-point exists.
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Taxonomy
TopicsAdvanced Topology and Set Theory · Fuzzy and Soft Set Theory · Advanced Banach Space Theory
