A. Kwela

activity

20132026

most citedHomogeneous ideals on countable sets

22 citations · 105 across the 33 of their papers we have counts for

collaborators

Showing 2021 · math.LOShow all

3 papers · 2 filters

math.LO2021

On a conjecture of Debs and Saint Raymond

Adam Kwela

Borel separation rank of an analytic ideal $I$ on $ω$ is the minimal ordinal $α < ω_{1}$ such that there is $S \in Σ_{1 + α}^{0}$ with $\mathcal{I}\subseteq \mathc…

math.LO2021★ 1 cited

On extendability to $F_{σ}$ ideals

Adam Kwela

Answering in negative a question of M. Hrušák, we construct a Borel ideal not extendable to any $F_{σ}$ ideal and such that it is not Katětov above the ideal $conv$ .

math.LO2021

Inductive limits of ideals

Adam Kwela

G. Debs and J. Saint Raymond in 2009 defined the Borel separation rank of an analytic ideal $I$ ( $rk (I)$ ) as minimal ordinal $α < ω_{1}$ such that there is…

On a conjecture of Debs and Saint Raymond

On extendability to Fσ​ ideals

Inductive limits of ideals

On extendability to $F_{σ}$ ideals