Tristan van der Vlugt

dblp:390/6787 · DBLP profile ↗
← Back
2ranked-venue papers
2as first author
2since 2021 · last 2025
0009-0009-9633-3304ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Theory of computation · 2 · 2 first-author · 2 since 2021
YearPublicationVenuePosition
2025 Cardinal characteristics on bounded generalised Baire spaces
abstract
We will give an overview of four families of cardinal characteristics defined on subspaces ∏ α ∈ κ b ( α ) of the generalised Baire space κ κ , where κ is strongly inaccessible and b ∈ κ κ . The considered families are bounded versions of the dominating, eventual difference, localisation and antilocalisation numbers, and their dual cardinals. We investigate parameters for which these cardinals are nontrivial and how the cardinals relate to each other and to other cardinals of the generalised Cichoń diagram. Finally we prove that different choices of parameters may lead to consistently distinct cardinals.
Tristan van der Vlugt
Ann. Pure Appl. Log.1
2024 Separating Many localisation Cardinals on the generalised Baire Space
abstract
Abstract Given a cofinal cardinal function $h\in {}^{\kappa }\kappa $ for $\kappa $ inaccessible, we consider the dominating h-localisation number, that is, the least cardinality of a dominating set of h-slaloms such that every $\kappa $ -real is localised by a slalom in the dominating set. It was proved in [3] that the dominating localisation numbers can be consistently different for two functions h (the identity function and the power function). We will construct a $\kappa ^+$ -sized family of functions h and their corresponding localisation numbers, and use a ${\leq }\kappa $ -supported product of a cofinality-preserving forcing to prove that any simultaneous assignment of these localisation numbers to cardinals above $\kappa $ is consistent. This answers an open question from [3].
Tristan van der Vlugt
J. Symb. Log.1