Year: 2025
Type: article
Abstract: We give characterizations for the thin ideal and almost thin ideal, which were studied by Jörg Brendle and Jana Flašková in their paper Brendle, J. 236 (3), 201–245 (2017). We check the various properties of selected ideals. We also verify whether these ideals are comparable in the Rudin-Blass order and Rudin-Keisler order. Moreover, we present a negative answer to [Filipów, R. 1–48 (2024) Question 8.8(1)].
Source: Archive for Mathematical Logic
Authors: Krzysztof Kowitz, Jacek Tryba
Institution: University of Gdańsk
Language: English
Subfield: Geometry and Topology
Field: Mathematics
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,190
OpenAlex ID: W4415774066