Results 11 to 20 of about 23,335 (263)

Existence‎ Solution for‎ ‎a Non-smooth System [PDF]

open access: yesMathematics Interdisciplinary Research
‎A variational method for a mixed boundary value problem in mathematical physics is considered‎. ‎Using two-field Lagrange multipliers‎, ‎we would investigate a variational formulation containing a mixed variational problem which is equivalent with a ...
Maisam Alizadeh   +2 more
doaj   +1 more source

Variational Estimation Methods for Sturm–Liouville Problems

open access: yesMathematics, 2022
In this paper, we are concerned with approach solutions for Sturm–Liouville problems (SLP) using variational problem (VP) formulation of regular SLP.
Elena Corina Cipu, Cosmin Dănuţ Barbu
doaj   +1 more source

On a variation of the Oberwolfach problem

open access: yesDiscrete Mathematics, 1979
AbstractWe consider the following “spouse-avoiding” variant of the Oberwolfach problem (briefly NOP): “At a gathering there are n couples. Is it possible to arrange a seating for the 2n people present at s round tables T1,T2,…,Ts (where Ti can accomodate ki ⩾ 3 people and Σki=2n) for m different meals so that each person has every other person except ...
Charlotte Huang   +2 more
openaire   +1 more source

Multitime multiobjective variational problems via η-approximation method [PDF]

open access: yesYugoslav Journal of Operations Research, 2022
The present article is devoted to multitime multiobjective variational problems via η-approximation method. In this method, an η-approximation approach is applied to the considered problem, and a new problem is constructed, called as η- approximated ...
Jha Shalini   +2 more
doaj   +1 more source

On a Volume-Constrained Variational Problem [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 1999
Let \(W\colon {\mathbb R}^{d\times N}\to[0,+\infty[\) be a \(C^1\) quasiconvex function with \(p\) growth, \(p>1\), and such that \[ \sum_{i,j=1}^d\sum_{k=1}^N{\partial W\over\partial\xi_{ik}}(\xi)\xi_{jk}v^iv^j > 0\text{ whenever }\xi^Tv\not=0,\;\xi\in{\mathbb R}^{d\times N},\;v\in S^{d-1}, \] where \(S^{d-1}\) is the unit sphere in \({\mathbb R}^d\).
L. AMBROSIO   +3 more
openaire   +2 more sources

A note on a second order PDE with critical nonlinearity

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
In this work, we are interested in a nonlinear PDE of the form: $-\Delta u = K(x) u^\frac{n+2}{n-2}, u>0$ on $\Omega$ and $u=0$ on $\partial\Omega$, where $n\geq 3$ and $\Omega$ is a regular bounded domain of $\mathbb{R}^n$.
Khadijah Sharaf
doaj   +1 more source

Conserved Quantities for Constrained Hamiltonian System within Combined Fractional Derivatives

open access: yesFractal and Fractional, 2022
Singular systems, which can be applied to gauge field theory, condensed matter theory, quantum field theory of anyons, and so on, are important dynamic systems to study.
Chuanjing Song
doaj   +1 more source

Variations on the Sum-Product Problem [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2015
30 pages, new version contains improved exponent in main theorem due to suggestion of M.
Brendan Murphy   +2 more
openaire   +3 more sources

Multistep Hybrid Extragradient Method for Triple Hierarchical Variational Inequalities

open access: yesAbstract and Applied Analysis, 2013
We consider a triple hierarchical variational inequality problem (THVIP), that is, a variational inequality problem defined over the set of solutions of another variational inequality problem which is defined over the intersection of the fixed point set ...
Zhao-Rong Kong   +3 more
doaj   +1 more source

Application of a Stochastic Extension of the Analytical Design of Aggregated Regulators to a Multidimensional Biomedical Object

open access: yesMathematics, 2023
The results of the application of the methods of the synergetic control theory to a high-dimensional immunology object with uncertainty in its descriptions are reported.
Svetlana Kolesnikova, Ekaterina Kustova
doaj   +1 more source

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