arXiv research

Study finds first integrals in Finsler metrics with vanishing χ-curvature.

Study constant mean curvature surfaces with integrable boundary conditions.

Sharp lower bound found for integral varifolds' mean curvature.

Ecker's and Huisken's quantities agree for ancient mean curvature flows.

Integrability of mean curvature near degenerate points in Heisenberg group.

The paper derives inequalities for mean curvatures of hypersurfaces in Riemannian manifolds.

We investigate the integral conditions to extend the mean curvature flow in a Riemannian manifold. We prove that the mean curvature flow solution with finite total mean curvature on a finite time interval $[0,T)$ can be extended over time $T$. Moreover, we show that the condition is optimal in some sense.

In this paper we prove a monotonicity formula for the integral of the mean curvature for complete and proper hypersurfaces of the hyperbolic space and, as consequences, we obtain a lower bound for the integral of the mean curvature and that the integral of the mean curvature is infinity.

In this note, we first prove that the solution of mean curvature flow on a finite time interval $[0,T)$ can be extended over time $T$ if the space-time integration of the norm of the second fundamental form is finite. Secondly, we prove that the solution of certain mean curvature flow on a finite time interval $[0,T)$ …

The paper generalizes Alexandrov theorems for null hypersurfaces with integral curvature conditions.

New discrete models for constant mean curvature surfaces and tori.

In this paper, we first investigate the integral curvature condition to extend the mean curvature flow of submanifolds in a Riemannian manifold with codimension $d\geq1$, which generalizes the extension theorem for the mean curvature flow of hypersurfaces due to Le-Šešum \cite{LS} and the authors \cite{XYZ1,XYZ2}. Usin…

It is shown that the equation which describes constant mean curvature surface via the generalized Weierstrass-Enneper inducing has Hamiltonian form. Its simplest finite-dimensional reduction has two degrees of freedom, integrable and its trajectories correspond to well-known Delaunay and do Carmo-Dajzcer surfaces (i.e.…

Study characterizes Finsler metrics with first integrals using specific curvature tensors.

The paper estimates area and volume for spacetimes with integral mean curvature bounds.

The abstract shows how constant mean curvature surfaces in hyperbolic space are linked to the Liouville equation.

Estimates submanifold diameters in curved spaces.

Paper extends curvature estimates to new tensor types.

Paper provides estimates for varifolds with critical mean curvature.

Formula extends mean curvature to convex sets.

Derives integral formulae on weighted manifolds.

We discuss notions of Gauss curvature and mean curvature for polyhedral surfaces. The discretizations are guided by the principle of preserving integral relations for curvatures, like the Gauss/Bonnet theorem and the mean-curvature force balance equation.

Study of nonlocal mean curvature and symmetry of surfaces.

The paper studies the consistency of mean curvature flow via volumetric varifolds.

We derive total mean curvature integration formulae of a three co-dimensional foliation $\mathcal{F}^{n}$ on a screen integrable half-lightlike submanifold, $M^{n+1}$ in a semi-Riemannian manifold $\overline{M}^{n+3}$. We give generalized differential equations relating to mean curvatures of a totally umbilical half-li…

Compactness results for hypersurfaces with mean curvature prescribed by an ambient function.

Unified representation for minimal and constant mean curvature surfaces.

Proves existence of graph on torus with prescribed curvature.

Extends diameter bounds for submanifolds with boundary and minor curvature restrictions.

Integral formulae for foliated Riemannian manifolds provide obstructions for existence of foliations or compact leaves of them with given geometric properties. This paper continues our recent study and presents new integral formulae and their applications for codimension-one foliated Randers spaces. The goal is a gener…

Study shows thresholding scheme converges for mean curvature flow of convex sets.

We consider the integrals of $r$-mean curvatures $S_r$ of a complete hypersurface $M$ in space forms $\mathcal{Q}_c^{n+1}$ which generalize volume $(r=0)$, total mean curvature $(r=1)$, total scalar curvature $(r=2)$ and total curvature $(r=n)$. Among other results we prove that a complete properly immersed hypersurfac…

This survey article is about discrete constant mean curvature surfaces defined by an approach related to integrable systems techniques. We introduce the notion of discrete constant mean curvature surfaces by first introducing properties of smooth constant mean curvature surfaces. We describe the mathematical structure …

Consider a family of smooth immersions $F(\cdot,t): M^n\to \mathbb{R}^{n+1}$ of closed hypersurfaces in $\mathbb{R}^{n+1}$ moving by the mean curvature flow $\frac{\partial F(p,t)}{\partial t} = -H(p,t)\cdot ν(p,t)$, for $t\in [0,T)$. In \cite{Cooper} Cooper has recently proved that the mean curvature blows up at the s…

Study on surfaces in product space with curvature inequality.

The article proves integral formulas for foliated sub-Riemannian manifolds.

Compact capillary hypersurfaces with specific curvatures are proven.

The study examines singularities in flows with curvature bounds and identifies unique tangent flows.

We survey - by means of 20 examples - the concept of varifold, as generalised submanifold, with emphasis on regularity of integral varifolds with mean curvature, while keeping prerequisites to a minimum. Integral varifolds are the natural language for studying the variational theory of the area integrand if one conside…

In this paper we prove that the H^k (k is odd and larger than 2) mean curvature flow of a closed convex hypersurface can be extended over the maximal time provided that the total L^p integral of the mean curvature is finite for some p

In this note we characterize compact hypersurfaces of dimension $n\geq 2$ with constant mean curvature $H$ immersed in space forms of constant curvature and satisfying an optimal integral pinching condition: they are either totally umbilical or, when $n\geq 3$ and $H\neq 0$, they are locally contained in a rotational h…

Sharp criteria for 2-varifolds to be induced by smooth immersions.

In this work it is shown that every integral varifold in an open subset of Euclidian space of locally bounded first variation can be covered by a countable collection of submanifolds of class C^2. Moreover, the mean curvature of each member of the collection agrees with the mean curvature of the varifold almost everywh…

New non-canonical flows found via parabolic Allen-Cahn equations.

Given a positive function F on Sn which satisfies a convexity condition, we introduce the r-th anisotropic mean curvature Mr for hypersurfaces in Rn+1 which is a generalization of the usual r-th mean curvature Hr. We get integral formulas of Minkowski type for compact hypersurfaces in Rn+1. We give some new characteriz…

The study proves a new inequality and formula for manifolds with non-negative Ricci curvature.

In this paper, we will derive a small energy regularity theorem for the mean curvature flow of arbitrary dimension and codimension. It says that if the parabolic integral of $|A|^2$ around a point in space-time is small, then the mean curvature flow cannot develop singularity at this point. As an application, we can pr…

The paper studies how to transform a sequence of cmc planes into a minimal surface.