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Avoidance for set-theoretic solutions of mean-curvature-type flows

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (1)

We give a self-contained treatment of set-theoretic subsolutions to flow by mean curvature, or, more generally, to flow by mean curvature plus an ambi......

Real Higgs pairs and non-abelian Hodge correspondence on a Klein surface

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

We introduce real structures on L-twisted Higgs pairs over a compact connected Riemann surface X equipped with an anti-holomorphic involution, where L......

Bergman functions and the equivalence problem of singular domains

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

In this article, we use the Bergman function, which is introduced by the second author in [Ya], to study the equivalence problem of bounded complete R......

On the existence of closed biconservative surfaces in space forms

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

Biconservative surfaces of Riemannian 3-space forms N3(p), are either constant mean curvature (CMC) surfaces or rotational lin-ear Weingarten surfaces......

Vanishing time behavior of solutions to the fast diffusion equation

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

Let n >= 3, 0 < m < (n-2) (n) and T > 0. We construct positive solu-tions to the fast diffusion equation u(t )= Delta u(m) in R-n x (0, T)......

Boundary unique continuation for the Laplace equation and the biharmonic operator

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (1)

We establish results on unique continuation at the boundary for the solutions of Delta u = f, f harmonic, and the biharmonic equation Delta 2u = 0. Th......

Divide knots of maximal genus defect

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

We construct divide knots with arbitrary smooth four-genus but topological four-genus equal to one. In particular, for strongly quasipositive fibred k......

Motion of level sets by inverse anisotropic mean curvature

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (1)

In this paper we consider the weak formulation of the inverse anisotropic mean curvature flow, in the spirit of HuiskenIlmanen [15]. By using approxim......

Small knots of large Heegaard genus

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

Building off ideas developed by Agol, we construct a family of hyperbolic knots Kam, whose complements contain no closed incom-pressible surfaces and ......

Confined Willmore energy and the area functional

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

We consider minimization problems of functionals given by the difference between the Willmore functional of a closed surface and its area, when the la......

Steklov eigenvalue problem on subgraphs of integer lattices

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

We study the eigenvalues of the Dirichlet-to-Neumann operator on a finite subgraph of the integer lattice symbolscript We estimate the first symbolscr......

A Bourgain-Brezis-Mironescu-Davila theorem in Carnot groups of step two

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (2)

In this note we prove the following theorem in any Carnot group of step two G: lim(s NE arrow 1/2) (1 - 2s)B-H,B-s(E) = 4/root pi B-H(E). Here, B-H(E)......

Asymptotic convergence for modified scalar curvature flow

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (1)

In this paper, we study the flow of closed, starshaped hypersurfaces in Rn+1 with speed r(alpha)sigma(1/2)(2), where sigma(1/2)(2) is the normalized s......

The moduli space of S1-type zero loci for Z/2-harmonic spinors in dimension 3

期刊: COMMUNICATIONS IN ANALYSIS AND GEOMETRY, 2023; 31 (1)

Let M be a compact oriented 3-dimensional smooth manifold. In this paper, we construct a moduli space consisting of pairs (Sigma, psi) where Sigma is ......

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