Results 51 to 60 of about 6,536,345 (211)

Existence Results for the Distributed Order Fractional Hybrid Differential Equations

Abstract and Applied Analysis, 2012
We introduce the distributed order fractional hybrid differential equations (DOFHDEs) involving the Riemann-Liouville differential operator of order ...
Hossein Noroozi, Alireza Ansari, Mohammad Shafi Dahaghin   +2 more
doaj   +1 more source

Subspace‐Based System Identification From Binary Measurements

Asian Journal of Control, EarlyView.
ABSTRACT This paper is concerned with subspace identification from binary measurements for systems whose dynamical behavior can be splited into a deterministic and a stochastic subsystem. An identification algorithm is detailed. The main contribution of the proposed identification algorithm lies in the identification of both the deterministic subsystem
Alex Ali Mestrah, Mathieu Pouliquen, Eric Pigeon   +2 more
wiley   +1 more source

Front Propagation Through a Perforated Wall

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We consider a bistable reaction– diffusion equation ut=Δu+f(u)$u_t=\Delta u +f(u)$ on RN${\mathbb {R}}^N$ in the presence of an obstacle K$K$, which is a wall of infinite span with many holes. More precisely, K$K$ is a closed subset of RN${\mathbb {R}}^N$ with smooth boundary such that its projection onto the x1$x_1$‐axis is bounded and that ...
Henri Berestycki, François Hamel, Hiroshi Matano   +2 more
wiley   +1 more source

High‐Order Projection‐Based Upwind Method for Simulation of Transitional Turbulent Flows

International Journal for Numerical Methods in Fluids, EarlyView.
In this study, we evaluated the implicit large‐eddy simulation capabilities of the mass‐conserving mixed stress method for transitional turbulent flows and proposed an efficient solution method for large‐scale applications. The results presented in this work show promising outcomes for incompressible aerodynamic flow problems, which can be further ...
Philip L. Lederer, Xaver Mooslechner, Joachim Schöberl   +2 more
wiley   +1 more source

A Kantorovich Version of Bernstein‐Type Logarithmic Operators

Mathematische Nachrichten, EarlyView.
ABSTRACT In this paper, we introduce a Kantorovich version of the Bernstein‐type logarithmic operators. The idea comes from the wide literature concerning exponential polynomials that preserve exponential functions: here, the exponential weights are replaced by logarithmic ones and the corresponding operators preserve the logarithmic functions.
Laura Angeloni, Danilo Costarelli, Chiara Darielli   +2 more
wiley   +1 more source

Stochastic approximation algorithms for support vector machines semi-supervised binary classification

Lietuvos Matematikos Rinkinys, 2008
In this paper,we consider the problem of semi-supervisedbinary classificationby Support Vector Machines (SVM). This problem is explored as an unconstrained and non-smooth optimization task when part of the available data is unlabelled.
Vaida Bartkutė-Norkūnienė
doaj   +1 more source

The differentiation operator on discrete function spaces of a tree [PDF]

, 2022
In this paper, we study the differentiation operator acting on discrete function spaces; that is spaces of functions defined on an infinite rooted tree.
Jackson, Colin M., Allen, Robert F., Robert F. Allen, Colin M. Jackson   +3 more
core   +1 more source

Almost Periodicity on Isolated Time Scales and Applications

Mathematische Nachrichten, EarlyView.
ABSTRACT In this work, we formulate a generalized definition of almost periodicity for functions defined on isolated time scales. The introduced definition is consistent with the known formulations in the discrete and quantum calculus settings. We state two different definitions of almost periodicity and we show their relation.
Martin Bohner, Jaqueline G. Mesquita, Ronaldo Murakami   +2 more
wiley   +1 more source

Existence of Solutions for a Nonlinear Dirichlet Problem Involving Gradient Dependent Lipschitz Convection Function

Journal of Mathematics
In this paper, our goal is to prove the existence of a weak solution (in H01Ω) for a fully nonlinear Dirichlet problem with a nonmonotone (e.g., Lipschitz) convection function F that depends on ∇u, and a nonlinearity G that is not necessarily monotone ...
Teffera M. Asfaw, Anteneh T. Adimasu, Achamyelesh A. Aligaz   +2 more
doaj   +1 more source

Approximation degree of Durrmeyer–Bézier type operators

Journal of Inequalities and Applications, 2018
Recently, a mixed hybrid operator, generalizing the well-known Phillips operators and Baskakov–Szász type operators, was introduced. In this paper, we study Bézier variant of these new operators.
Purshottam N. Agrawal, Serkan Araci, Martin Bohner, Kumari Lipi   +3 more
doaj   +1 more source