Katriin Pirk

activity

20162024

most citedDaugavet- and Delta-points in absolute sums of Banach spaces

9 citations · 10 across the 3 of their papers we have counts for

collaborators

Showing 2020 · math.FAShow all

2 papers · 2 filters

math.FA2020

Stability of diametral diameter two properties

Johann Langemets, Katriin Pirk

We prove that the diametral diameter two properties are inherited by $F$ -ideals (e.g., $M$ -ideals). On the other hand, these properties are lifted from an $M$ -ideal to the superspa…

math.FA2020★ 9 cited

Daugavet- and Delta-points in absolute sums of Banach spaces

Rainis Haller, Katriin Pirk, Triinu Veeorg

A Daugavet-point (resp.~ $Δ$ -point) of a Banach space is a norm one element $x$ for which every point in the unit ball (resp.~element $x$ itself) is in the closed convex hull of uni…