Results 1 to 10 of about 302 (37)
Deforming a Convex Hypersurface by Anisotropic Curvature Flows
In this paper, we consider a fully nonlinear curvature flow of a convex hypersurface in the Euclidean đ-space. This flow involves đ-th elementary symmetric function for principal curvature radii and a function of support function.
Ju HongJie, Li BoYa, Liu YanNan
doaj +1 more source
Let (M, â, ă, ă) be a manifold endowed with a flat torsionless connection r and a Riemannian metric ă, ă and (TkM)kâĽ1 the sequence of tangent bundles given by TkM = T(Tkâ1M) and T1M = TM. We show that, for any k ⼠1, TkM carries a Hermitian structure (Jk,
Boucetta Mohamed
doaj +1 more source
The General Dual Orlicz Geominimal Surface Area
In this paper, we study the general dual Orlicz geominimal surface area by the general dual Orlicz mixed volume which was introduced by Gardner et al. (2019).
Ni Li, Shuang Mou
doaj +1 more source
Singularities of Blaschke normal maps of convex surfaces [PDF]
We prove that the difference between the numbers of positive swallowtails and negative swallowtails of the Blaschke normal map for a given convex surface in affine space is equal to the Euler number of the subset where the affine shape operator has ...
Arnol'd +9 more
core +3 more sources
An isomorphic version of the Busemann-Petty problem for arbitrary measures [PDF]
We prove the following theorem. Let $\mu$ be a measure on $R^n$ with even continuous density, and let $K,L$ be origin-symmetric convex bodies in $R^n$ so that $\mu(K\cap H)\le \mu(L\cap H)$ for any central hyperplane H.
Koldobsky, Alexander, Zvavitch, Artem
core +1 more source
On the stability of the $p$-affine isoperimetric inequality
Employing the affine normal flow, we prove a stability version of the $p$-affine isoperimetric inequality for $p\geq1$ in $\mathbb{R}^2$ in the class of origin-symmetric convex bodies.
Ivaki, Mohammad N.
core +1 more source
Group-theoretic Approach for Symbolic Tensor Manipulation: II. Dummy Indices
Computational Group Theory is applied to indexed objects (tensors, spinors, and so on) with dummy indices. There are two groups to consider: one describes the intrinsic symmetries of the object and the other describes the interchange of names of dummy ...
B. F. SVAITER +2 more
core +1 more source
Geometric realizations, curvature decompositions, and Weyl manifolds
We show any Weyl curvature model can be geometrically realized by a Weyl ...
Gilkey, Peter +2 more
core +1 more source
Envelope of mid-planes of a surface and some classical notions of affine differential geometry
For a pair of points in a smooth locally convex surface in 3-space, its mid-plane is the plane containing its mid-point and the intersection line of the corresponding pair of tangent planes.
Craizer, Marcos, Junior, Ady Cambraia
core +1 more source
An osculating curve is a type of curve in space that holds significance in the study of differential geometry. In this article, we investigate certain geometric invariants of osculating curves on smooth and regularly immersed surfaces under conformal ...
Singh Kuljeet +2 more
doaj +1 more source

