A sufficient condition for a hypersurface to be isoparametric
نویسندگان
چکیده
منابع مشابه
A Sufficient Condition for a Compact Hypersurface in a Sphere to Be a Sphere
In this paper a characterization of small spheres in a sphere is obtained in terms of a pinching relation on the Ricci curvature.
متن کاملA New Sufficient Condition for a Digraph to Be Hamiltonian
In 2] the following extension of Meyniels theorem was conjectured: If D is a digraph on n vertices with the property that d(x) + d(y) 2n ? 1 for every pair of non-adjacent vertices x; y with a common out-neighbour or a common in-neighbour, then D is Hamiltonian. We verify the conjecture in the special case where we also require that minfd + (x)+d ? (y); d ? (x)+d + (y)g n ?1 for all pairs of ve...
متن کاملA sufficient condition for planar graphs to be 3-colorable
Planar graphs without 3-cycles at distance less than 4 and without 5-cycles are proved to be 3-colorable. We conjecture that, moreover, each plane graph with neither 5-cycles nor intersecting 3-cycles is 3-colorable. In this conjecture, none of the two assumptions can be dropped because there exist planar 4-chromatic graphs without 5-cycles, as well as planar 4chromatic graphs without intersect...
متن کاملA necessary condition for a Shearlet system to be a frame via admissibility
Necessary conditions for shearlet and cone-adapted shearlet systems to be frames are presented with respect to the admissibility condition of generators.
متن کاملA Sharp Sufficient Condition for Sparsity Pattern Recovery
Sufficient number of linear and noisy measurements for exact and approximate sparsity pattern/support set recovery in the high dimensional setting is derived. Although this problem as been addressed in the recent literature, there is still considerable gaps between those results and the exact limits of the perfect support set recovery. To reduce this gap, in this paper, the sufficient con...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Tohoku Mathematical Journal
سال: 2020
ISSN: 0040-8735
DOI: 10.2748/tmj.20190611