Results 61 to 70 of about 528,162 (194)

On θ-generalized demimetric mappings and monotone operators in Hadamard spaces

open access: yesDemonstratio Mathematica, 2020
Our main interest in this article is to introduce and study the class of θ-generalized demimetric mappings in Hadamard spaces. Also, a Halpern-type proximal point algorithm comprising this class of mappings and resolvents of monotone operators is ...
Ogwo Grace N.   +3 more
doaj   +1 more source

Portfolio Selection with Monotone Mean-Variance Preferences [PDF]

open access: yes
We propose a portfolio selection model based on a class of monotone preferences that coincide with mean-variance preferences on their domain of monotonicity, but differ where mean-variance preferences fail to be monotone and are therefore not ...
Fabio Maccheroni   +3 more
core  

Strictly monotone and smooth nonparametric regression for two or more variables [PDF]

open access: yes
In this article a new monotone nonparametric estimate for a regression function of two or more variables is proposed. The method starts with an unconstrained nonparametric regression estimate and uses successively one-dimensional isotonization procedures.
Dette, Holger, Scheder, Regine
core  

Fortuity and complexity in a simple quark model

open access: yesJournal of High Energy Physics
We observe and elaborate on a structural similarity between the categorization of monotone and fortuitous BPS operators in supersymmetric theories and gauge invariant quark operators in SU (N c ) QCD.
Jackson R. Fliss   +2 more
doaj   +1 more source

Representable Monotone Operators and Limits of Sequences of Maximal Monotone Operators

open access: yes, 2012
International audienceWe show that the lower limit of a sequence of maximal monotone operators on a reflexive Banach space is a representable monotone operator.
Lassonde, Marc, García, Yboon
core   +1 more source

Topological degree and application to a parabolic variational inequality problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We are interested in constructing a topological degree for operators of the form F=L+A+S, where L is a linear densely defined maximal monotone map, A is a bounded maximal monotone operators, and S is a bounded demicontinuous map of class (S+) with ...
A. Addou, B. Mermri
doaj   +1 more source

On the Monotonicity of Positive Linear Operators

open access: yesJournal of Approximation Theory, 1998
The main result of this paper concerns positive linear approximation operators of the so-called Feller type \[ K_n(f,x): =Ef(T_{n,x}) =\int_I f(t)dG_{n,x} (t),\;n\in\mathbb{N}, \] where the random variable \(T_{n,x}\) is the arithmetic mean of identically distributed random variables \(X_{i,x}\), \(I=1, \dots, n\) taking values in an interval \(I\) and
KHAN M. K.   +2 more
openaire   +3 more sources

Newton’s Method for Convex Operators and Applications

open access: yesInternational Journal of Analysis and Applications, 2013
This review work presents the general statement of a variant of Newton’s method for convex monotone operators and its applications. We consider the estimation of the absolute error too. One makes the connection to the contraction principle.
Octav Olteanu
doaj   +2 more sources

Modelling the biological invasion of Carcinus maenas (the European green crab)

open access: yesJournal of Biological Dynamics, 2016
This paper proposes a system of integro-difference equations to model the spread of Carcinus maenas, commonly called the European green crab, that causes severe damage to coastal ecosystems. A model with juvenile and adult classes is first studied. Here,
Nathan G. Marculis, Roger Lui
doaj   +1 more source

On sum of monotone operator of type (FPV) and a maximal monotone operator

open access: yesNew Trends in Mathematical Science, 2016
In the setting of a general real Banach space, we prove that the sum of a monotone operator A of type (FPV) and a maximal monotone operator B is maximal with domA∩ int domB6 φ and either domB is open or for any x ∈ domA∩ int domB, kx ∗ k ≤ |B(x)|, x ∗ ∈ A(x).
PRADHAN, D. K., PATTANAİK, S. R.
openaire   +2 more sources

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