Results 31 to 40 of about 38,903 (286)

On Weak and Strong Solutions of Paired Stochastic Functional Differential Equations in Infinite-Dimensional Spaces

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2021
In this paper, we study the questions of the existence of global weak solutions and local strong solutions of paired stochastic functional differential equations in a Hilbert space, one of which is an equation with an unbounded operator, and the other is
Andrey O. Stanzhytskyi
doaj   +1 more source

Sophisticated Statistics Cannot Compensate for Method Effects If Quantifiable Structure Is Compromised

open access: yesFrontiers in Psychology, 2022
Researchers rely on psychometric principles when trying to gain understanding of unobservable psychological phenomena disconfounded from the methods used.
Damian P. Birney   +3 more
doaj   +1 more source

A Class of Fuzzy Variational Inequality Based on Monotonicity of Fuzzy Mappings

open access: yesAbstract and Applied Analysis, 2013
Invex monotonicity and pseudoinvex monotonicity of fuzzy mappings are introduced in this paper, and relations are discussed between invex monotonicity (pseudoinvex monotonicity) and invexity (pseudoinvexity) of fuzzy mappings. The existence of a solution
Zezhong Wu, Jiuping Xu
doaj   +1 more source

Uniqueness and monotonicity of solutions for fractional equations with a gradient term

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
In this paper, we consider the following fractional equation with a gradient term $$(-\Delta)^{s} u(x)= f(x,u (x), \nabla u (x)),$$ in a bounded domain and the upper half space.
Pengyan Wang
doaj   +1 more source

An Algebraic Inequality, II [PDF]

open access: yes, 2001
In this article, using inequality between logarithmic mean and one-parameter mean, which can be deduced from monotonicity of the extended mean values, an integral analogue of J. S. Martins’ inequality is proved.
Qi, Feng, Guo, Bai-Ni
core   +6 more sources

Functions operating on several multivariate distribution functions

open access: yesDependence Modeling, 2023
Functions ff on [0,1]m{\left[0,1]}^{m} such that every composition f∘(g1,…,gm)f\circ \left({g}_{1},\ldots ,{g}_{m}) with dd-dimensional distribution functions g1,…,gm{g}_{1},\ldots ,{g}_{m} is again a distribution function, turn out to be characterized ...
Ressel Paul
doaj   +1 more source

Well Posedness of New Optimization Problems with Variational Inequality Constraints

open access: yesFractal and Fractional, 2021
In this paper, we studied the well posedness for a new class of optimization problems with variational inequality constraints involving second-order partial derivatives.
Savin Treanţă
doaj   +1 more source

Finite difference approximations for a class of non-local parabolic equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
In this paper we study finite difference procedures for a class of parabolic equations with non-local boundary condition. The semi-implicit and fully implicit backward Euler schemes are studied.
Yanping Lin   +2 more
doaj   +1 more source

Questions of existence and uniqueness of the solution of one class of an infinite system of nonlinear two-dimensional equations [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The paper is devoted to the study of one class of infinite systems of nonlinear two-dimensional equations with convex and monotone nonlinearity. The studied  class of nonlinear systems of algebraic equations has both theoretical and practical ...
Petrosyan, Haykanush S.   +2 more
doaj   +1 more source

A monotonicity index for the monotone fuzzy modeling problem [PDF]

open access: yes2012 IEEE International Conference on Fuzzy Systems, 2012
In this paper, the problem of maintaining the (global) monotonicity and local monotonicity properties between the input(s) and the output of an FIS model is addressed. This is known as the monotone fuzzy modeling problem. In our previous work, this problem has been tackled by developing some mathematical conditions for an FIS model to observe the ...
Kai, M. T.   +5 more
openaire   +3 more sources

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