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math.FA2026
Zonoids whose polars are zonoids: the Banach--Mazur distance need not tend to one
Dmitry Ryabogin, Artem Zvavitch
For every , we consider a Gaussian zonoid of revolution arising from works of Vitale and Mathis. We prove that is also a zonoid and compute the Banach--Mazur…
math.MG2026
Simultaneous Busemann-Petty and Shephard Volume Comparisons
Artem Zvavitch
We study the simultaneous Busemann-Petty and Shephard volume comparison problem: whether comparison of the volumes of all central hyperplane sections and all orthogonal hyperplane…
math.FA2026
Isomorphic Busemann--Petty for arbitrary measures: the sharp order
Alexander Koldobsky, Artem Zvavitch
Let be the optimal constant with the following property. For every even, continuous, strictly positive density on and all origin-symmetric convex bodies $K,L\subset…