Perov’s theorem applied to systems of equations
Abstract In this paper, we consider systems of equations having a linear part and also a nonlinear part. We give…
(original)
Testing Weyl geometric gravity with the SPARC galactic rotation curves database
Abstract We present a detailed investigation of the properties of the galactic rotation curves in the Weyl geometric gravity model, in which…
Positive radial solutions for Dirichlet problems in the ball
Abstract We are concerned with existence, localization and multiplicity of positive radial solutions to Dirichlet problems with φ-Laplacians in a ball, in both…
Spherical interpolation of scattered data using least squares thin-plate spline and inverse multiquadric functions
Abstract We construct some smooth functions defined over a sphere that interpolate large sets of scattered data, using some modified…
On the iterates of uni- and multidimensional operators
Abstract The problem of the convergence of the iterates of operators or of a sequence of operators is discussed in…
Păltănea’s operators: old and new results
Abstract This note concerns the study of an approximation linear positive process introduced by R. Paltanea in 2008. Considering the…
New Subclasses of Univalent Mappings in Several Complex Variables: Extension Operators and Applications
Abstract In this paper we define new subclasses of univalent mappings in the case of several complex variables. We will…
A method of lower and upper solutions for control problems and application to a model of bone marrow transplantation
Abstract A lower and upper solution method is introduced for control problems related to abstract operator equations. The method is…
Energy-based localization of positive solutions for stationary Kirchhoff-type equations and systems
Abstract In this paper, we are concerned with positive solutions for the Dirichlet boundary value problem for equations and systems…
Linking Methods for Componentwise Variational Systems
Abstract The paper deals with the equilibrium solutions of two-equation systems in which each component equation has a variational structure.…