Results 31 to 40 of about 2,758,037 (275)

Estimation of Single-Index Models Based on Boosting Techniques [PDF]

open access: yes, 2008
In single-index models the link or response function is not considered as fixed. The data determine the form of the unknown link function. In order to obtain a flexible form of the link function we specify the link function as an expansion in basis ...
Leitenstorfer, Florian, Tutz, Gerhard
core   +1 more source

Coincidence Point Theorems on $b$-Metric Spaces via $C_{F}$-Simulation Functions

open access: yesCommunications in Advanced Mathematical Sciences, 2019
In this paper, we investigate the existence and uniqueness of the coincidence points with the $C_{F}$-simulation function for  two nonlinear operators on the $b$-metric space.
Reyhan Özçelik, Emrah Evren Kara
doaj   +1 more source

Darbo-Type $ \mathcal{Z}_{\rm{m}} $ and $ \mathcal{L}_{\rm{m}} $ contractions and its applications to Caputo fractional integro-differential equations

open access: yesAIMS Mathematics, 2021
Darbo type $ \mathcal{Z}_{\rm{m}} $-contraction and Darbo type $ \mathcal{L}_{\rm{m}} $-contraction are introduced and some fixed point results are established for such contraction mappings.
Mian Bahadur Zada   +3 more
doaj   +1 more source

Green Function Simulation of Hamiltonian Lattice Models with Stochastic Reconfiguration [PDF]

open access: yes, 1999
We apply a recently proposed Green Function Monte Carlo to the study of Hamiltonian lattice gauge theories. This class of algorithms computes quantum vacuum expectation values by averaging over a set of suitable weighted random walkers.
B. Berche   +3 more
core   +4 more sources

Some Results on S-Contractions of Type E

open access: yesMathematics, 2018
In this manuscript, we consider the compositions of simulation functions and E-contraction in the setting of a complete metric space. We investigate the existence and uniqueness of a fixed point for this composite form. We give some illustrative examples
Andreea Fulga, Erdal Karapınar
doaj   +1 more source

Measurement and simulation of laser-induced fluorescence from non-equilibrium ultracold neutral plasmas [PDF]

open access: yes, 2001
We report new measurements and simulations of laser-induced fluorescence in ultracold neutral plasmas. We focus on the earliest times, when the plasma equilibrium is evolving and before the plasma expands.
Denning, A.   +2 more
core   +4 more sources

Analysis of the Brinkman equation as a model for flow in porous media [PDF]

open access: yes, 1987
The fundamental solution or Green's function for flow in porous media is determined using Stokesian dynamics, a molecular-dynamics-like simulation method capable of describing the motions and forces of hydrodynamically interacting particles in Stokes ...
Brady, J. F., Durlofsky, L.
core   +1 more source

Simulations functions and Geraghty type results

open access: yesBoletim da Sociedade Paranaense de Matemática, 2021
We concern this manuscript with Geraghty type contraction mappings via simulation functions and pull down some sufficient conditions for the existence and uniqueness of point of coincidence for several classes of mappings involving Geraghty functions in the setting of metric spaces. These findings touch up many of the existing results in the literature.
Sumit Chandok   +4 more
openaire   +5 more sources

Recent Advances on the Results for Nonunique Fixed in Various Spaces

open access: yesAxioms, 2019
In this short survey, we aim to underline the importance of the non-unique fixed point results in various abstract spaces. We recall a brief background on the topic and we combine, collect and unify several existing non-unique fixed points in the ...
Erdal Karapınar
doaj   +1 more source

Nonlinear response of electrons to a positive ion [PDF]

open access: yes, 2002
Electric field dynamics at a positive ion imbedded in an electron gas is considered using a semiclassical description. The dependence of the field autocorrelation function on charge number is studied for strong ion-electron coupling via MD simulation ...
Annette Calisti   +9 more
core   +3 more sources

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