On the approximation of the global extremum of a semi-Lipschitz function5 years agoAbstractIn this paper one obtains a sequential procedure for determining the global extremum of a semi-Lipschitz real-valued function defined on…
On the Extensions Preserving the Shape of a Semi-Hölder Function5 years agoAbstractWe present some results concerning the extension of a semi-Hölder real-valued function defined on a subset of a quasi-metric space,…
Block incremental unknowns for anisotropic elliptic equations5 years agoAbstractIn this article, we define the notion of block incremental unknowns for anisotropic elliptic equations. Written in a block structure,…
Analysis of aggregation-based multigrid5 years agoAbstractAggregation-based multigrid with standard piecewise constant like prolongation is investigated. Unknowns are aggregated either by pairs or by quadruplets; in…
Unsteady boundary layer flow and heat transfer over a stretching sheet5 years agoAbstractUnsteady two-dimensional boundary layer flow and heat transfer over a stretching flat plate in a viscous and incompressible fluid of…
Mixed convection flow near an axisymmetric stagnation point on a vertical cylinder5 years agoAbstractThe mixed convection flow near an axisymmetric stagnation point on a vertical cylinder is considered. The equations for the fluid…
An implicit numerical spline method for systems for ODEs5 years agoAbstract An implicit numerical method is introduced that gives piecewise polynomial spline approximations for the solution of an initial value…
On the nonmonotone behavior of the Newton‐GMBACK method5 years agoAbstractGMBACK is a Krylov solver for large linear systems, which is based on backward error minimization properties. The minimum backward…
A mixed iteration for nonnegative matrix factorizations5 years agoAbstract We show that, under appropriate conditions, one can create a hybrid between two given iterations which can perform better…
Solving inverse problems via hemicontractive maps5 years agoAbstractWe prove a “collage” theorem for hemicontractive maps and we use it for inverse problems. A numerical example is given.…