Showing 2024Show all
2 papers · 1 filter
math.LO2024
Weak A2 spaces, the Kastanas game and strategically Ramsey sets
Clement Yung
We introduce the notion of a weak A2 space (or wA2-space), which generalises spaces satisfying Todorčević's axioms A1-A4 and countable vector spaces. We show that in any Polish wea…
math.LO2024
Mad families of Gowers' infinite block sequences
Clement Yung
Call a subset of small if it does not contain a copy of for some infinite block sequence . Gowers' $\mathbf{FI…