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math.FA2026
Maximal regularity for evolution equations with critical singular perturbations
Esmée Theewis, Mark Veraar
Assuming has maximal -regularity, this paper investigates perturbations of by time-dependent operators that are unbounded and satisfy a critical -integrabilit…
math.FA2023
Norming and dense sets of extreme points of the unit ball in spaces of bounded Lipschitz functions
Sander C. Hille, Esmee S. Theewis
On spaces of finite signed Borel measures on a metric space one has introduced the Fortet-Mourier and Dudley norms, by embedding the measures into the dual space of the Banach spac…
math.FA2022
Explicit expressions and computational methods for the Fortet-Mourier distance to finite weighted sums of Dirac measures
Sander C. Hille, Esmée S. Theewis
Explicit expressions and computational approaches are given for the Fortet-Mourier distance between a positively weighted sum of Dirac measures on a metric space and a positive fin…