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By Federer and Fleming there exist at least one mass-minimizing normal current in every real-valued homology class of a Riemannian manifold. However the regularity of the mass-minimizing currents and their distributions may generally be…

Differential Geometry · Mathematics 2015-01-09 Yongsheng Zhang

We prove several vanishing theorems for the cohomology of balanced hyperbolic manifolds that we introduced in our previous work and for the $L^2$ harmonic spaces on the universal cover of these manifolds. Other results include a Hard…

Complex Variables · Mathematics 2022-02-15 Samir Marouani , Dan Popovici

We give a new proof of the uniformization theorem of the leaves of a lamination by surfaces of hyperbolic conformal type. We use a laminated version of the Ricci flow to prove the existence of a laminated Riemannian metric (smooth on the…

Differential Geometry · Mathematics 2021-08-05 Richard Muñiz , Alberto Verjovsky

We describe the behaviour at infinity of the bifurcation current in the moduli space of quadratic rational maps. To this purpose, we extend it to some closed, positive (1, 1)-current on a two-dimensional complex projective space and then…

Dynamical Systems · Mathematics 2015-07-08 François Berteloot , Thomas Gauthier

We study harmonic map heat flow along ancient super Ricci flow, and derive several Liouville theorems with controlled growth from Perelman's reduced geometric viewpoint. For non-positively curved target spaces, our growth condition is…

Differential Geometry · Mathematics 2021-08-04 Keita Kunikawa , Yohei Sakurai

The open problem of how singular current structures form in line-tied, three-dimensional magnetic fields is addressed. A Lagrangian magneto-frictional relaxation method is employed to model the field evolution towards the final…

Solar and Stellar Astrophysics · Physics 2014-10-27 I. J. D. Craig , Frederic Effenberger

On a smooth asymptotically flat Riemannian manifold with non-compact boundary, we prove a positive mass theorem for metrics which are only continuous across a compact hypersurface. As an application, we obtain a positive mass theorem on…

Differential Geometry · Mathematics 2025-06-26 Sergio Almaraz , Shaodong Wang

We study the structure of a class of laminar closed positive currents on $\mathbb{CP}^2$, naturally appearing in birational dynamics. We prove such a current admits natural non intersecting {\em leaves}, that are closed under analytic…

Complex Variables · Mathematics 2007-05-23 Romain Dujardin

We prove that a probability measure on a compact non-singular lamination by hyperbolic Riemann surfaces is harmonic if and only if it is the projection of a measure on the unit tangent bundle such that it is invariant under both the…

Dynamical Systems · Mathematics 2007-10-11 Yuri Bakhtin , Matilde Martinez

Let $X$ be a compact K\"ahler manifold and $\{\theta\}$ be a big cohomology class. We prove several results about the singularity type of full mass currents, answering a number of open questions in the field. First, we show that the Lelong…

Differential Geometry · Mathematics 2019-02-20 Tamás Darvas , Eleonora Di Nezza , Chinh H. Lu

We prove a new logarithmic epiperimetric inequality for multiplicity-one stationary cones with isolated singularity by flowing in the radial direction any given trace along appropriately chosen directions. In contrast to previous…

Analysis of PDEs · Mathematics 2019-03-13 Max Engelstein , Luca Spolaor , Bozhidar Velichkov

We analyze the asymptotic behavior of a $2$-dimensional integral current which is almost minimizing in a suitable sense at a singular point. Our analysis is the second half of an argument which shows the discreteness of the singular set for…

Analysis of PDEs · Mathematics 2015-08-25 Camillo De Lellis , Emanuele Spadaro , Luca Spolaor

We prove positive mass theorems for asymptotically hyperbolic and asymptotically locally hyperbolic Riemannian manifolds with black-hole-type boundaries.

General Relativity and Quantum Cosmology · Physics 2021-12-08 Piotr T. Chruściel , Gregory J. Galloway

The formation of singularities on a free surface of a conducting ideal fluid in a strong electric field is considered. It is found that the nonlinear equations of two-dimensional fluid motion can be solved in the small-angle approximation.…

Fluid Dynamics · Physics 2009-11-06 N. M. Zubarev

For a singular Riemannian foliation whose leaves are properly embedded, we show in the first part of this article the existence of global tubular neighbourhoods, and we develop a global description of the foliation as stratification by…

Differential Geometry · Mathematics 2008-12-18 Eva Nowak

We study the holonomy cocycle H of a holomorphic foliation \Fc by Riemann surfaces defined on a compact complex projective surface X satisfying the following two conditions: 1) its singularities E are all hyperbolic; 2) there is no…

Dynamical Systems · Mathematics 2017-12-27 Viet-Anh Nguyen

Let (F_n) be a sequence of (multivalued) meromorphic maps between compact Kaehler manifolds X1 and X2. We study the asymptotic distribution of preimages of points by F_n and the asymptotic distribution of fixed points for multivalued…

Dynamical Systems · Mathematics 2007-05-23 Tien-Cuong Dinh

A meromorphic quadratic differential with poles of order two, on a compact Riemann surface, induces a measured foliation on the surface, with a spiralling structure at any pole that is determined by the complex residue of the differential…

Geometric Topology · Mathematics 2016-07-26 Subhojoy Gupta , Michael Wolf

Let $T$ be a positive closed current of unit mass on the complex projective space $\mathbb P^n$. For certain values $\alpha<1$, we prove geometric properties of the set of points in $\mathbb P^n$ where the Lelong number of $T$ exceeds…

Complex Variables · Mathematics 2013-05-07 Dan Coman , Tuyen Trung Truong

We analyse finite-time singularities of the Teichm\"uller harmonic map flow -- a natural gradient flow of the harmonic map energy -- and find a canonical way of flowing beyond them in order to construct global solutions in full generality.…

Differential Geometry · Mathematics 2018-10-17 Melanie Rupflin , Peter M. Topping