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math.MG2024
Stability in the Banach isometric conjecture and nearly monochromatic Finsler surfaces
Gautam Aishwarya, Dmitry Faifman
The Banach isometric conjecture asserts that a normed space with all of its -dimensional subspaces isometric, where , is Euclidean. The first case of is classical…
math.MG2023
Volume growth of Funk geometry and the flags of polytopes
Dmitry Faifman, Constantin Vernicos, Cormac Walsh
We consider the Holmes--Thompson volume of balls in the Funk geometry on the interior of a convex domain. We conjecture that for a fixed radius, this volume is minimized when the d…
math.MG2011
The quotient girth of normed spaces, and an extension of Schäffer's dual girth conjecture to Grassmannians
Dmitry Faifman
In this note we introduce a natural Finsler structure on convex surfaces, referred to as the projective Finsler structure, which is dual in a sense to the obvious inclusion of a co…