10 citations · 21 across the 14 of their papers we have counts for
4 papers · 1 filter
Erratum and a counterexample to: Stability of diametral diameter two properties
Johann Langemets
In Proposition 3.5 of our paper [J. Langemets and K. Pirk, Stability of diametral diameter two properties, RACSAM (2021)], we claimed that the convex DLD2P lifts from an -ideal…
Characterizing the Daugavet property by squares of rank-one operators
Johann Langemets
We prove that, for real Banach spaces of dimension greater than one, each of the identities and , required for every rank-one operator…
Dual Banach spaces with the ball-covering property
Johann Langemets, Emma Mõttus, Natalia Saealle
We study ball-covering properties of dual Banach spaces and their connections with the geometry of predual unit balls. One of our main results shows that, for every separable Banac…
Transfinite Daugavet property
Antonio Avilés, Johann Langemets, Miguel Martín +1
We extend the Daugavet property and a perfect version of it to transfinite cardinals in order to distinguish between spaces with the ordinary Daugavet property by some kind of comp…