Year: 2025
Type: article
Abstract: We prove that P -points (even strong P-points) and Gruff ultrafilters exist in any forcing extension obtained by adding fewer than $\aleph _{\omega } $ -many random reals to a model of CH. These results improve and correct previous theorems that can be found in the literature.
Source: Canadian Journal of Mathematics
Authors: Osvaldo Guzmán-González, Alan Dow
Language: English
Subfield: Geometry and Topology
Field: Mathematics
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4413806405