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math.FA2021★ 1 cited
Roundness Properties of Banach spaces
Alireza Amini-Harandi, Ian Doust, Gavin Robertson
The maximal roundness of a metric space is a quantity that arose in the study of embeddings and renormings. In the setting of Banach spaces, it was shown by Enflo that roundness ta…
math.FA2020
Distance matrices of subsets of the Hamming cube
Ian Doust, Gavin Robertson, Alan Stoneham +1
Graham and Winkler derived a formula for the determinant of the distance matrix of a full-dimensional set of points in the Hamming cube…
math.FA2018
A note on positive operators
Ian Doust
We show that positive absolutely norm attaining operators can be characterized by a simple property of their spectra. This result clarifies and simplifies a result of Ramesh. As an…