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Consider a Brody hyperbolic foliation with non-degenerate singularities on a compact complex manifold. We show that the leafwise heat diffusions and the abstract heat diffusions coincide. In particular, this will imply that the abstract…

Dynamical Systems · Mathematics 2023-12-12 François Bacher

We investigate uniqueness of solution to the heat equation with a density $\rho$ on complete, non-compact weighted Riemannian manifolds of infinite volume. Our main goal is to identify sufficient conditions under which the solution $u$…

Analysis of PDEs · Mathematics 2025-07-18 Alexander Grigor'yan , Giulia Meglioli , Alberto Roncoroni

Two smooth manifolds M and N are called R-diffeomorphic if their product with the real line are diffeomorphic. We consider the following simplification problem: does R-diffeomorphism imply diffeomorphism or homeomorphism? For compact…

Geometric Topology · Mathematics 2018-09-03 Jean-Claude Hausmann , Bjørn Jahren

We study the problem posed by F. Burstall of developing a theory of isothermic Euclidean submanifolds of dimension greater than or equal to three. As a natural extension of the definition in the surface case, we call a Euclidean submanifold…

Differential Geometry · Mathematics 2007-05-23 Ruy Tojeiro

We prove that the fundamental group of the group of Hamiltonian diffeomorphisms of the symplectic manifold that is obtain by blowing up a submanifold contains an element of infinite order. We prove this using Weinstein's morphism and by…

Symplectic Geometry · Mathematics 2022-06-23 Andrés Pedroza

We prove the following to results: (1) A subgroup G of the isometry group of a Riemannian manifold M acts properly on M if and only if G is closed in the isometry group of M. (2) The orbits of an isometric action are closed if and only if…

Differential Geometry · Mathematics 2008-11-05 J. Carlos Diaz-Ramos

The asymptotic behaviour of empirical measures has plenty of studies. However, the research on conditional empirical measures is limited. Being the development of Wang \cite{eW1}, under the quadratic Wasserstein distance, we investigate the…

Probability · Mathematics 2022-04-29 Huaiqian Li , Bingyao Wu

A basic problem in smooth dynamics is determining if a system can be distinguished from its inverse, i.e., whether a smooth diffeomorphism $T$ is isomorphic to $T^{-1}$. We show that this problem is sufficiently general that asking it for…

Dynamical Systems · Mathematics 2020-09-22 Matthew Foreman

We prove the existence of minimal hypersurfaces for the Dirichlet that extends a similar result of Jenkins and Serrin in Euclidean Space to Riemannian ambient manifolds

Differential Geometry · Mathematics 2013-07-31 Ari Aiolfi , Jaime Ripoll , Marc Soret

We show that certain right-invariant metrics endow the infinite-dimensional Lie group of all smooth orientation-preserving diffeomorphisms of the circle with a Riemannian structure. The study of the Riemannian exponential map allows us to…

Mathematical Physics · Physics 2015-06-26 Adrian Constantin , Boris Kolev

We prove the existence of classical solutions to the Dirichlet problem for a class of fully nonlinear elliptic equations of curvature type on Riemannian manifolds. We also derive new second derivative boundary estimates which allows us to…

Differential Geometry · Mathematics 2013-05-07 Jorge H. S. de Lira , Flávio F. Cruz

We present a simple, computation free and geometrical proof of the following classical result: for a diffeomorphism of a manifold, any compact submanifold which is invariant and normally hyperbolic persists under small perturbations of the…

Dynamical Systems · Mathematics 2011-09-16 Pierre Berger , Abed Bounemoura

Given a Riemannian spin^c manifold whose boundary is endowed with a Riemannian flow, we show that any solution of the basic Dirac equation satisfies an integral inequality depending on geometric quantities, such as the mean curvature and…

Differential Geometry · Mathematics 2016-12-13 Fida Chami , Nicolas Ginoux , Georges Habib , Roger Nakad

A diffeomorphism of pseudo-Riemannian manifolds is called sectional curvature preserving if it preserves the sectional curvature of all the nondegenerate 2-planes. We consider a similar condition for degenerate 2-planes and we prove that…

Differential Geometry · Mathematics 2010-08-31 Ognian Kassabov

We smooth the singularities of a strictly hyperbolized smooth cube manifold.

Differential Geometry · Mathematics 2014-12-01 Pedro Ontaneda

In this paper, we study the partial convexity of smooth solutions to the heat equation on a compact or complete non-compact Riemannian manifold M or Kahler-Ricci flow. We show that under a natural assumption, a new partial convexity…

Differential Geometry · Mathematics 2009-10-14 Li Ma

This paper introduces a biharmonic interpolatory subdivision framework on Riemannian manifolds. In the Euclidean setting, the six-point Deslauriers-Dubuc stencil is characterised as the unique minimiser of a discrete curvature-variation…

General Mathematics · Mathematics 2026-04-16 Hassan Ugail , Newton Howard

Let $N$ be a smooth manifold and $f:N\to N$ be a $C^l$, $l\geq 2$ diffeomorphism. Let $M$ be a normally hyperbolic invariant manifold, not necessarily compact. We prove an analogue of the $\lambda$-lemma in this case.

Dynamical Systems · Mathematics 2007-05-23 Jacky Cresson , Stephen Wiggins

We establish the equivalence between the family of closed uniformly regular Riemannian manifolds and the class of complete manifolds with bounded geometry.

Differential Geometry · Mathematics 2016-04-08 Marcelo Disconzi , Yuanzhen Shao , Gieri Simonett

In a previous work, we studied isoparametric functions on Riemannian manifolds, especially on exotic spheres. One result there says that, in the family of isoparametric hypersurfaces of a closed Riemannian manifold, there exist at least one…

Differential Geometry · Mathematics 2012-10-10 Jianquan Ge , Zizhou Tang