Results 31 to 40 of about 5,326,818 (348)

Special Curves in Engineering. Surfaces Generated by the Logarithmic Spiral

open access: yesModelling in Civil Environmental Engineering, 2022
The logarithmic spiral is one of the most known curves with applications in engineering. We consider product of the logarithmic spiral with a real line and tensor product of two logarithmic spirals and investigate their minimality or flatness.
Broscăţeanu Ștefan Cezar
doaj   +1 more source

Notes on Translating Solitons for Mean Curvature Flow [PDF]

open access: yesMinimal Surfaces: Integrable Systems and Visualisation, 2019
The purpose of these notes is to provide an introduction to those who want to learn more about translating solitons for the mean curvature flow in $\mathbb{R}^3$, particularly those which are complete graphs over domains in $\mathbb{R}^2$.
D. Hoffman   +3 more
semanticscholar   +1 more source

On the evolution by fractional mean curvature [PDF]

open access: yesCommunications in Analysis and Geometry, 2019
In this paper we study smooth solutions to a fractional mean curvature flow equation. We establish a comparison principle and consequences such as uniqueness and finite extinction time for compact solutions. We also establish evolutions equations for fractional geometric quantities that yield preservation of certain quantities (such as positive ...
Sáez, Mariel, Valdinoci, Enrico
openaire   +5 more sources

Overdetermined problems and constant mean curvature surfaces in cones [PDF]

open access: yesRevista matemática iberoamericana, 2018
We consider a partially overdetermined problem in a sector-like domain $\Omega$ in a cone $\Sigma$ in $\mathbb{R}^N$, $N\geq 2$, and prove a rigidity result of Serrin type by showing that the existence of a solution implies that $\Omega$ is a spherical ...
F. Pacella, G. Tralli
semanticscholar   +1 more source

Stability of helicoidal surfaces with constant mean curvature

open access: yesInternational Journal of Mathematics for Industry, 2020
Motivated by an experimental result on the shape of liquid water supported by a small stainless helical wire, we find a class of stable helicoidal convex surfaces with constant mean curvature whose boundary consists of a single helix and two short arcs.
Yuta Hatakeyama, Miyuki Koiso
doaj   +1 more source

Preconditioned augmented Lagrangian method for mean curvature image deblurring

open access: yesAIMS Mathematics, 2022
Image deblurring models with a mean curvature functional has been widely used to preserve edges and remove the staircase effect in the resulting images. However, the Euler-Lagrange equations of a mean curvature model can be used to solve fourth-order non-
Shahbaz Ahmad   +6 more
doaj   +1 more source

Forced hyperbolic mean curvature flow [PDF]

open access: yes, 2012
In this paper, we investigate two hyperbolic flows obtained by adding forcing terms in direction of the position vector to the hyperbolic mean curvature flows in \cite{klw,hdl}.
Mao, Jing
core   +1 more source

On the mean curvature of submanifolds with nullity [PDF]

open access: yesAnnals of Global Analysis and Geometry, 2020
In this paper, we investigate geometric conditions for isometric immersions with positive index of relative nullity to be cylinders. There is an abundance of noncylindrical $n$-dimensional minimal submanifolds with index of relative nullity $n-2$, fully described by Dajczer and Florit \cite{DF2} in terms of a certain class of elliptic surfaces. Opposed
A. E. Kanellopoulou, Th. Vlachos
openaire   +3 more sources

Curvatures of hypersurfaces

open access: yesLietuvos Matematikos Rinkinys, 2010
In this article we generalize some classical formulas for curvatures of hypersurfaces in the n-dimensional Euclidean space using the homogeneous formulas.
Kazimieras Navickis
doaj   +1 more source

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