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math.FA2019
The isomorphic Kottman constant of a Banach space
Jesús M. F. Castillo, Manuel González, Tomasz Kania +1
We show that the Kottman constant , together with its symmetric and finite variations, is continuous with respect to the Kadets metric, and they are log-convex, hence con…
math.SP2019★ 3 cited
Inverse problems for symmetric doubly stochastic matrices whose Suleĭmanova spectra are bounded below by 1/2
Michal Gnacik, Tomasz Kania
A new sufficient condition for a list of real numbers to be the spectrum of a symmetric doubly stochastic matrix is presented; this is a contribution to the classical spectral inve…
math.FA2019
Closed ideals of operators on the Tsirelson and Schreier spaces
Kevin Beanland, Tomasz Kania, Niels Jakob Laustsen
Let denote the Banach algebra of bounded operators on , where~ is either Tsirelson's Banach space or the Schreier space of order for some …