Nonlinear differential systems of the third and fourth order
Nonlinear noncoercive boundary value problems
Nonlinear parabolic boundary value problems with the time derivative in the boundary conditions
Nonlinear potential theory and Sobolev spaces
Nonlinear surface waves under external forcing
Nonlinear systems of parabolic PDE's for phase change problem
Nonoscillation theorems for a class of neutral functional differential equations of arbitrary order
Non-separable Borel sets
Nonstable homotopy groups of
Normal and category measures on topological spaces
Normale Zahlen und Bairesche Kategorien von Mengen
Normality and product spaces
Note on Stieffel-Whitney classes of flag manifolds
Note sur les espaces de voisinages () et les ordres semi-topogènes
Notes on conformal differential geometry
This survey paper presents lecture notes from a series of four lectures addressed to a wide audience and it offers an introduction to several topics in conformal differential geometry. In particular, a very nice and gentle introduction to the conformal Riemannian structures themselves, flat or curved, is presented in the beginning. Then the behavior of the covariant derivatives under the rescaling of the metrics is described. This leads to Penrose’s local twistor transport which is introduced in...
Nulldimensionale Räume
Numerical analysis of a lumped parameter friction model
We consider a contact problem of planar elastic bodies. We adopt Coulomb friction as (an implicitly defined) constitutive law. We will investigate highly simplified lumped parameter models where the contact boundary consists of just one point. In particular, we consider the relevant static and dynamic problems. We are interested in numerical solution of both problems. Even though the static and dynamic problems are qualitatively different, they can be solved by similar piecewise-smooth continuation...
Numerical approaches to parameter estimates in stochastic differential equations driven by fractional Brownian motion
We solve the one-dimensional stochastic heat equation driven by fractional Brownian motion using the modified Euler-Maruyama finite differences method. We use the numerical solution as our observation and we show how to estimate the drift parameter from a one path only.
Numerical approximation of a nonlinear Sturm-Liouville problem on an infinite interval
Numerical approximation of density dependent diffusion in age-structured population dynamics
We study a numerical method for the diffusion of an age-structured population in a spatial environment. We extend the method proposed in [2] for linear diffusion problem, to the nonlinear case, where the diffusion coefficients depend on the total population. We integrate separately the age and time variables by finite differences and we discretize the space variable by finite elements. We provide stability and convergence results and we illustrate our approach with some numerical result.