22 citations · 23 across the 4 of their papers we have counts for
4 papers
Local Blaschke--Kakutani ellipsoid characterization and Banach's isometric subspaces problem
Sergei Ivanov, Daniil Mamaev, Anya Nordskova
We prove the following local version of Blaschke--Kakutani's characterization of ellipsoids: Let be a finite-dimensional real vector space, a convex body with 0 in…
Remarks on Chebyshev coordinates
Yu. Burago, S. Ivanov, S. Malev
Some results on existence of global Chebyshev coordinates on a Riemannian manifold or, more generally, on Aleksandrov surface are proved. For instance, if the positive and the nega…
Interpolation of subspaces and applications to exponential bases in Sobolev spaces
S. Ivanov, N. Kalton
We give precise conditions under which the real interpolation space [Y_0,X_1]_{s,p} coincides with a closed subspace of the corresponding interpolation space [X_0,X_1]_{s,p} when Y…
Interpolation of subspaces and applications to exponential bases
Sergei Ivanov
This paper has been withdrawn by the author becouse the conjecture presented in this paper is false. The correct study of metrics in interpolation spaces for and applcation to nonh…