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We consider closed orientable hypersurfaces in a wide class of warped product manifolds, which include space forms, deSitter-Schwarzschild and Reissner-Nordstr\"{o}m manifolds. By using a new integral formula or Brendle's Heintze-Karcher…

Differential Geometry · Mathematics 2019-02-14 Shanze Gao , Hui Ma

We derive tight expressions for the maximum number of $k$-faces, $0\le{}k\le{}d-1$, of the Minkowski sum, $P_1+...+P_r$, of $r$ convex $d$-polytopes $P_1,...,P_r$ in $\mathbb{R}^d$, where $d\ge{}2$ and $r<d$, as a (recursively defined)…

Computational Geometry · Computer Science 2015-03-03 Menelaos I. Karavelas , Eleni Tzanaki

We define twisted Alexander polynomials of a complex hypersurface with arbitrary singularities. These generalize the classical Alexander polynomials of high dimensional hypersurfaces and the twisted Alexander polynomial of plane curves. We…

Geometric Topology · Mathematics 2016-01-21 Kaiho Tommy Wong

The Brunn-Minkowski Theory has seen several generalizations over the past century. Many of the core ideas have been generalized to measures. With the goal of framing these generalizations as a weighted Brunn-Minkowski theory, we prove the…

Functional Analysis · Mathematics 2023-09-28 Liudmyla Kryvonos , Dylan Langharst

We investigate integral conditions involving the mean curvature vector $\vec{H}$ or mixed higher-order mean curvatures, to determine when a codimension-two submanifold $\Sigma$ lies on a shear-free (umbilical) null hypersurface in a…

Differential Geometry · Mathematics 2023-07-19 Kwok-Kun Kwong , Xianfeng Wang

We prove that the existence of a finite Minkowski base for Okounkov bodies on a smooth projective variety with respect to an admissible flag implies rational polyhedrality of the global Okounkov body. As an application of this general…

Algebraic Geometry · Mathematics 2014-03-19 David Schmitz , Henrik Seppänen

We give a new proof of the generalized Minkowski identities relating the higher degree mean curvatures of orientable closed hypersurfaces immersed in a given constant sectional curvature manifold. Our methods rely on a fundamental…

Differential Geometry · Mathematics 2021-09-06 R. Albuquerque

We give a systematic and thorough study of geometric notions and results connected to Minkowski's measure of symmetry and the extension of the well-known Minkowski functional to arbitrary, not necessarily symmetric convex bodies K on any…

Classical Analysis and ODEs · Mathematics 2007-05-23 Szilard Gy. Revesz

This paper is a survey on the Lickorish type construction of some kind of closed manifolds over simple convex polytopes. Inspired by Lickorish's theorem, we propose a method to describe certain families of manifolds over simple convex…

Algebraic Topology · Mathematics 2019-02-20 Zhi Lü , Wei Wang , Li Yu

The purpose of this note is to study the number of elements in Minkowski bases on algebraic surfaces with rational polyhedral pseudo-effective cone.

Algebraic Geometry · Mathematics 2016-01-20 Piotr Pokora , Tomasz Szemberg

This paper presents an additional class of regular polyhedra--envelope polyhedra--made of regular polygons, where the arrangement of polygons (creating a single surface) around each vertex is identical; but dihedral angles between faces…

Metric Geometry · Mathematics 2019-08-16 J. Richard Gott

The endomorphism ring of the projective plane over a field F of characteristic neither two nor three is slightly more complicated in the Morel-Voevodsky motivic stable homotopy category than in Voevodsky's derived category of motives. In…

Algebraic Geometry · Mathematics 2022-12-26 Oliver Röndigs

For entire spacelike stationary 2-dimensional graphs in Minkowski spaces, we establish Bernstein type theorems under specific boundedness assumptions either on the W-function or on the total (Gaussian) curvature. These conclusions imply the…

Differential Geometry · Mathematics 2015-03-23 Xiang Ma , Peng Wang , Ling Yang

Consider groups such as Mordell-Weil groups of abelian varieties over number fields, odd algebraic $K$-theory groups of number fields, or finitely generated subgroups of the multiplicative groups of number fields. They are all equipped with…

Number Theory · Mathematics 2024-05-20 Stefan Barańczuk

There exists a surface of a convex polyhedron P and a partition L of P into geodesic convex polygons such that there are no connected "edge" unfoldings of P without self-intersections (whose spanning tree is a subset of the edge skeleton of…

Computational Geometry · Computer Science 2008-10-06 Alexey S Tarasov

For a collection of convex bodies $P_1,\dots,P_n \subset \mathbb{R}^d$ containing the origin, a Minkowski complex is given by those subsets whose Minkowski sum does not contain a fixed basepoint. Every simplicial complex can be realized as…

Combinatorics · Mathematics 2018-03-16 Florian Frick , Raman Sanyal

Aleksandrov surfaces are a generalization of two-dimensional Riemannian manifolds, and it is known that every open simply connected Aleksandrov surface is conformally equivalent either to the unit disc (hyperbolic case) or to the plane…

Complex Variables · Mathematics 2014-12-15 Byung-Geun Oh

Dans les ann\'ees 1940-1970, Alexandrov et l'"\'Ecole de Leningrad" ont d\'evelopp\'e une th\'eorie tr\`es riche des surfaces singuli\`eres. Il s'agit de surfaces topologiques, munie d'une m\'etrique intrins\`eque pour laquelle on peut…

Differential Geometry · Mathematics 2009-06-19 Marc Troyanov

The concept of a Minkowski arrangement was introduced by Fejes T\'oth in 1965 as a family of centrally symmetric convex bodies with the property that no member of the family contains the center of any other member in its interior. This…

Metric Geometry · Mathematics 2021-12-14 Máté Kadlicskó , Zsolt Lángi

The theory of coconvex bodies was formalized by A.~Khovanski{\u\i} and V.~Timorin in \cite{KT}. It has fascinating relations with the classical theory of convex bodies, as well as applications to Lorentzian geometry. In a recent preprint…

Metric Geometry · Mathematics 2017-11-15 François Fillastre
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