Results 31 to 40 of about 8,622,101 (70)

Coupled Dynamics Between Networks and Fields in Physical Space: A Theoretical Perspective

open access: yesAnnalen der Physik, Volume 538, Issue 9, September 2026.
Networks embedded in physical space often communicate through dynamical fields that both mediate and respond to collective behavior. A unified theoretical perspective is presented for these network‐field systems, linking established mathematical frameworks and revealing how feedback between discrete interactions and continuous spatial processes can ...
Alex Arenas   +4 more
wiley   +1 more source

Demystifying Spatial Confounding—A Unified Analytical Framework for the Bias in Covariate Effect Estimates

open access: yesEnvironmetrics, Volume 37, Issue 6, September 2026.
ABSTRACT In spatial regression models, unmeasured spatial variables, represented by spatial random effects, are typically not independent of observed covariates and can induce significant bias in covariate effect estimates. This fundamental problem, known as spatial confounding, has been extensively studied, but sometimes with puzzling and seemingly ...
Emiko Dupont, Isa Marques, Thomas Kneib
wiley   +1 more source

Linear Complementarity Problems over Symmetric Cones: Characterization of Qb-transformations and Existence Results [PDF]

open access: yes, 2013
Artículo de publicación ISIThis paper is devoted to the study of the symmetric cone linear complementarity problem (SCLCP). Specifically, our aim is to characterize the class of linear transformations for which the SCLCP has always a nonempty and ...
Ramírez Cabrera, Héctor   +2 more
core   +1 more source

On the finite termination of an entropy function based smoothing Newton method for vertical linear complementarity problems [PDF]

open access: yes
By using a smooth entropy function to approximate the non-smooth max-type function, a vertical linear complementarity problem (VLCP) can be treated as a family of parameterized smooth equations.
Fang, S.-C.   +3 more
core  

Properties of Classes of Linear Transformations in the Semidefinite Linear Complementarity Problem [PDF]

open access: yes, 2010
The semidefinite linear complementarity problem (SDLCP) is ageneralization of the linear complementarity problem (LCP) inwhich linear transformations replace matrices and the cone ofpositive semidefinite matrices replaces the nonnegative orthant.We study
Wang, Xianzhi
core  

Absolute Value Equation Solution via Dual Complementarity [PDF]

open access: yes, 2011
By utilizing a dual complementarity condition, we propose an iterative method for solving the NPhard absolute value equation (AVE): Ax?|x| = b, where A is an n n square matrix.
Mangasarian, Olvi
core  

Complementarity Problems in GAMS and the PATH Solver [PDF]

open access: yes, 1998
A fundamental mathematical problem is to find a solution to a square system of nonlinear equations. There are many methods to approach this problem, the most famous of which is Newton?s method.
Ferris, Michael C.   +5 more
core  

On the P'2 and P2-properties in the semidefinite linear complementarity problem

open access: yes, 2010
Motivated by the so-called P2-property in the semidefinite linear complementarity problems, in this article, we introduce the concept of P2′-property for a linear transformation on the space of real n×n symmetric matrices. While these two properties turn
Chandrashekaran, A.   +2 more
core   +1 more source

Semidefinite lineare Komplementärprobleme

open access: yes, 1977
Semidefinite linear complementarity problems arise by discretization of variational inequalities describing e.g. elastic contact problems, free boundary value problems etc.
Eckhardt, Ulrich, Eckhardt, U.
core  

Formulating and Solving Exhaustible Resource Models as Mixed Complementarity Problems in GAMS [PDF]

open access: yes
In this paper a formulation of dynamic non-linear programs as mixed complementarity problems (mcp) is shown. Models of exhaustible resource markets are used to describe the transformation.
Sven M. Flakowski
core  

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