Results 251 to 260 of about 274,651 (285)

Growth-collapse and decay-surge evolutions, and geometric Langevin equations

Physica A: Statistical Mechanics and its Applications, 2006
We introduce and study an analytic model for physical systems exhibiting growth-collapse and decay-surge evolutionary patterns. We consider a generic system undergoing a smooth deterministic growth/decay evolution, which is occasionally interrupted by abrupt stochastic collapse/surge discontinuities.
Iddo Eliazar, Joseph Klafter
openaire   +1 more source

Numerical approximation of anisotropic geometric evolution equations in the plane

IMA Journal of Numerical Analysis, 2007
We present a variational formulation of fully anisotropic motion by surface diffusion and mean curvature flow, as well as related flows. The proposed scheme covers both the closed-curve case and the case of curves that are connected via triple junction points.
Barrett J. W., Garcke H., Nürnberg R.
openaire   +1 more source

Finite Element Methods for Geometric Evolution Equations

2019
We study finite element methods for the solution of evolution equations in Riemannian geometry. Our focus is on Ricci flow and Ricci-DeTurck flow in two dimensions, where one of the main challenges from a numerical standpoint is to discretize the scalar curvature of a time-dependent Riemannian metric with finite elements.
openaire   +1 more source

New Creatinine- and Cystatin C–Based Equations to Estimate GFR without Race

New England Journal of Medicine, 2021
Lesley A Inker, Nwamaka D Eneanya, Josef Coresh   +2 more
exaly  

Geometrical maps in the hydrodynamic/quantum description of the evolution equations

International Journal of Geometric Methods in Modern Physics
In this work, the topological and geometrical structure of the evolution equations of physical systems is treated and analyzed from the point of view of the set of solutions, in particular the singular ones. To this end, a generalization of the Wigner function is introduced for the case of multidimensional quadratic Hamiltonians of the type of our ...
Alexander I. Aptkarev, Diego J. Cirilo-Lombardo, Yuri G. Rykov   +2 more
openaire   +1 more source

Parametric Approaches for Geometric Evolution Equations and Interfaces

2023
Eberhard Bänsch, Klaus Deckelnick, Harald Garcke, Paola Pozzi   +3 more
openaire   +1 more source

Geometric Evolution Equations and Curvature Flow

2020
openaire   +1 more source

The general relativistic constraint equations

Living Reviews in Relativity, 2021
Alessandro Carlotto
exaly  

Geometric Evolution Equations

2005
openaire   +1 more source

Cardiovascular disease risk prediction equations in 400 000 primary care patients in New Zealand: a derivation and validation study

Lancet, The, 2018
Romana Pylypchuk, Andrew Kerr, Katrina Poppe   +2 more
exaly