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Using log geometry, we study smoothability of genus zero twisted stable maps to stacky curves relative to a collection of marked points. One application is to smoothing semi-log canonical fibered surfaces with marked singular fibers.

Algebraic Geometry · Mathematics 2026-03-04 Kenneth Ascher , Dori Bejleri

We study Riemannian manifolds $(M^n,g)$ with mean-convex boundary whose Ricci curvature is nonnegative in a spectral sense. Our first main result is a sharp spectral extension of a rigidity theorem by Kasue: we prove that under the…

Differential Geometry · Mathematics 2026-05-13 Gioacchino Antonelli , Yangyang Li , Paul Sweeney

For the damped wave equation on a compact manifold with {\em continuous} dampings, the geometric control condition is necessary and sufficient for {uniform} stabilisation. In this article, on the two dimensional torus, in the special case…

Analysis of PDEs · Mathematics 2020-11-18 Nicolas Burq , Patrick Gérard

We prove a lower bound for the first Steklov eigenvalue of embedded minimal hypersurfaces with free boundary in a compact $n$-dimensional manifold which has nonnegative Ricci curvature and strictly convex boundary. When $n=3$, this implies…

Differential Geometry · Mathematics 2020-01-06 Ailana Fraser , Martin Li

Using a recent description of the geometric stability manifold, we show the geometric stability manifold associated to any smooth projective complex surface is contractible. We then use this result to demonstrate infinitely many new…

Algebraic Geometry · Mathematics 2024-05-24 Nick Rekuski

We consider the problem of minimizing Euler's elastica energy for simple closed curves confined to the unit disk. We approximate a simple closed curve by the zero level set of a function with values +1 on the inside and -1 on the outside of…

Analysis of PDEs · Mathematics 2010-05-21 Patrick W. Dondl , Luca Mugnai , Matthias Röger

We prove a compact embedding theorem in a class of spaces of piecewise H1 functions subordinated to a class of shape regular, but not necessarily quasi-uniform triangulations of a polygonal domain. This result generalizes the…

Numerical Analysis · Mathematics 2013-03-01 Sheng Zhang

In this note, we present a simpler way to prove the compactness of the closed intervals in simply ordered set with order topology.

General Topology · Mathematics 2019-04-01 Sachin B Bhalekar

We state and prove a stabilisation result for solutions of abstract gradient systems associated with nonsmooth energy functions on infinite dimensional Hilbert spaces. One feature is that in this general setting the assumption on the range…

Functional Analysis · Mathematics 2016-09-30 Ralph Chill , Sebastian Mildner

We consider the behavior of the nonlocal minimal surfaces in the vicinity of the boundary. By a series of detailed examples, we show that nonlocal minimal surfaces may stick at the boundary of the domain, even when the domain is smooth and…

Analysis of PDEs · Mathematics 2016-03-17 Serena Dipierro , Ovidiu Savin , Enrico Valdinoci

We generalize the notion of calibrated submanifolds to smooth maps and show that the several examples of smooth maps appearing in the differential geometry become the examples of our situation. Moreover, we apply these notion to give the…

Differential Geometry · Mathematics 2023-05-03 Kota Hattori

We investigate the Hilbert complex of elasticity involving spaces of symmetric tensor fields. For the involved tensor fields and operators we show closed ranges, Friedrichs/Poincare type estimates, Helmholtz type decompositions, regular…

Analysis of PDEs · Mathematics 2021-08-17 Dirk Pauly , Walter Zulehner

We show uniqueness and stability in $L^2$ and for all time for piecewise-smooth solutions to hyperbolic balance laws. We have in mind applications to gas dynamics, the isentropic Euler system and the full Euler system for a polytropic gas…

Analysis of PDEs · Mathematics 2020-11-26 Sam G. Krupa

In this article, by using basic properties of fuzzy soft topology we defined fuzzy soft compactness. We also introduced some basic definitions and theorems of the concept.

General Topology · Mathematics 2014-04-15 Ismail Osmanoglu , Deniz Tokat

We prove an extension of Eells and Sampson's rigidity theorem for harmonic maps from a closed manifold of non-negative Ricci curvature to a manifold of non-positive sectional curvature. We give an application of our result in the setting of…

Differential Geometry · Mathematics 2024-06-11 Giulio Colombo , Marco Mariani , Marco Rigoli

We discuss a methodology that could be gainfully exploited using easily measurable experimental quantities to ascertain if the ``no-slip" boundary condition is appropriate for the flows of fluids past a solid boundary.

Fluid Dynamics · Physics 2023-07-04 Josef Málek , Kumbakonam R. Rajagopal

In this article, we prove the exponential stabilization of the semilinear wave equation with a damping effective in a zone satisfying the geometric control condition only. The nonlinearity is assumed to be subcritical, defocusing and…

Analysis of PDEs · Mathematics 2013-12-03 Romain Joly , Camille Laurent

Haslhofer and M\"uller proved a compactness Theorem for four-dimensional shrinking gradient Ricci solitons, with the only assumption being that the entropy is uniformly bounded from below. However, the limit in their result could possibly…

Differential Geometry · Mathematics 2017-07-20 Yongjia Zhang

We prove the existence of minimisers for a family of models related to the single-slip-to-single-plane relaxation of single-crystal, strain-gradient elastoplasticity with $L^p$-hardening penalty. In these relaxed models, where only one…

Analysis of PDEs · Mathematics 2017-01-05 Keith Anguige , Patrick Dondl , Martin Kružík

We study smoothness of generalized solutions of nonlocal elliptic problems in plane bounded domains with piecewise smooth boundary. The case where the support of nonlocal terms can intersect the boundary is considered. We find conditions…

Analysis of PDEs · Mathematics 2014-04-22 Pavel Gurevich