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Now showing items 2221-2230 of 3781
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
We continue our study of the Fourier–Stieltjes algebra associated to a twisted (unital, discrete) C*-dynamical system and discuss how the various notions of equivalence of such systems are reflected at the algebra level. ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
In this paper, we provide a priori error estimates in standard Sobolev (semi-)norms for approximation in spline spaces of maximal smoothness on arbitrary grids. The error estimates are expressed in terms of a power of the ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
We consider the problem of optimal singular control of a stochastic partial differential equation (SPDE) with space-mean dependence. Such systems are proposed as models for population growth in a random environment. We ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
We study the algebraic combinatorics of monomial degenerations of Plücker forms which is governed by matching fields in the sense of Sturmfels and Zelevinsky. We provide a necessary condition for a matching field to yield ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
Abstract The Maxwell–Klein–Gordon equations are a set of coupled nonlinear time‐dependent wave equations, used to model the interaction of an electromagnetic field with a particle. The solutions, expressed with a magnetic ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Structural reliability analysis is concerned with estimation of the probability of a critical event taking place, described by P(g(X)≤0) for some n-dimensional random variable X and some real-valued function g. In many ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
Sea ice is highly complex due to the inhomogeneity of the physical properties (e.g. temperature and salinity) as well as the permeability and mixture of water and a matrix of sea ice and/or sea ice crystals. Such complexity ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
We consider the problem of identifying a mixture of Gaussian distributions with the same unknown covariance matrix by their sequence of moments up to certain order. Our approach rests on studying the moment varieties ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
We study a financial market where the risky asset is modelled by a geometric Itô-Lévy process, with a singular drift term. This can for example model a situation where the asset price is partially controlled by a company ...