Hùng Việt Chu

collaborators

2 papers

math.CO2025

Linear Recurrences of Generalized Schreier Sets Revisited

Hung Viet Chu, Zachary Louis Vasseur

For $p, q \in N$ , a finite nonempty set $F$ is said to be $(p, q)$ -Schreier (or maximal $(p, q)$ -Schreier, respectively) if $q min F \geq p ∣ F ∣$ (or $q min F = p ∣ F ∣$ , respective…

math.FA2025

Lower-Order Refinements of Greedy Approximation

Kevin Beanland, Hung Viet Chu, Thomas Schlumprecht +1

For two countable ordinals $α$ and $β$ , a basis of a Banach space $X$ is said to be $(α, β)$ -quasi-greedy if it is 1) quasi-greedy, 2) $S_{α}$ -unconditional but not $\mathc…