2024-03-29T12:39:17+04:30 http://maco.lu.ac.ir/browse.php?mag_id=3&slc_lang=en&sid=1
3-62 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Some Multiplicative Inequalities for Heinz Operator Mean Silvestru Sever Dragomir sever.dragomir@vu.edu.au In this paper we obtain some new multiplicative inequalities for Heinz operator mean. Young's Inequality Real functions Arithmetic mean-Geometric mean inequality Heinz means 2021 6 01 1 10 http://maco.lu.ac.ir/article-1-62-en.pdf 10.52547/maco.2.1.1
3-69 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 The Numerical Solution of Nonlinear Optimal Control Problems by Using Operational Matrix of Bernstein Polynomials Najmeh Ghaderi najmeh_ghaderi@yahoo.com Mohammad Hadi Farahi farahi@math.um.ac.ir ‎A numerical approach based on Bernstein polynomials is presented to unravel optimal control of nonlinear systems. The operational matrices of differentiation, integration and product are introduced. Then, these matrices are implemented to decrease the solution of nonlinear optimal control problem to the solution of the quadratic programming problem which can be solved with many algorithms and softwares. This method is easy to implement it with an accurate solution. Some examples are included to demonstrate the validity and applicability of the technique. Optimal control of nonlinear systems Operational matrix of Bernstein polynomials Quadratic programming problem. 2021 6 01 11 27 http://maco.lu.ac.ir/article-1-69-en.pdf 10.52547/maco.2.1.2
3-68 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Characterization of Aluthge Transform of Composition Operators Morteza Sohrabi sohrabi.mo@lu.ac.ir Let $widetilde{{C}_{varphi}}$ be the Aluthge transform of composition operator on $L^{2}(Sigma)$. The main result of this paper is characterizations of Aluthge transform of composition operators in some operator classes that are weaker than hyponormal, such as hyponormal, quasihyponormal, paranormal, $*$-paranormal on $L^{2}(Sigma)$. Moreover, to explain the results, we provide several useful related examples to show that $widetilde{{C}_{varphi}}$ lie between these classes. Aluthge transform polar decomposition conditional expectation hyponormal paranormal 2021 6 01 29 38 http://maco.lu.ac.ir/article-1-68-en.pdf 10.52547/maco.2.1.3
3-70 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Bipolar Multiplicative Metric Spaces and Fixed Point Theorems of Covariant and Contravariant Mappings Ganesa C Moorthy ganesamoorthyc@gmail.com Gurusamy Siva gsivamaths2012@gmail.com The definition of bipolar multiplicative metric space is introduced in this article, and in this space some properties are derived. Multiplicative contractions for covariant and contravariant maps are defined and fixed points are obtained. Also, some fixed point results of covariant and contravariant maps satisfying multiplicative contraction conditions are proved for bipolar multiplicative metric spaces. Moreover, Banach contraction principle and Kannan fixed point theorem are generalized. Bipolar multiplicative metric space multiplicative contraction Fixed point. 2021 6 01 39 49 http://maco.lu.ac.ir/article-1-70-en.pdf 10.52547/maco.2.1.4
3-63 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 A Comparison of Six Methods Used to Evaluate Apparent Thermal Diffusivity for Soils (Iğdır Region, Eastern Turkey) Resat Mikail elman.hazar@igdir.edu.tr Elman HAZAR elman.hazar@igdir.edu.tr Ali Farajzadeh farajzadehali@gmail.com Erhan Erdel erhan.erdel@igdir.edu.tr Fariz Mikailsoy fariz.m@igdir.edu.tr The objective of this work is to investigate the infl uence of boundary conditions at depth soil on the development of methods to determine the soil′s apparent thermal diffusivity based on solution of inverse problems of a heat-transfer equation. Experimental investigations were carried out to establish the influence of boundary conditions at depth in soil on the solution of inverse problems of modeling of heat transfer in soils. For this purpose, 1 soil profile in the land at different depths (x=0, 5, 10, 15,  20, 40, 60 cm) thermal sensors (Temperature recorder Elitech RC-4) have been installed to measure soil temperatures depending on time and depths. Based on these data, the apparent  thermal diffusivity in soils was calculated using the classical (layered) and proposed (point) methods developed for the case with one and two harmonics, and they were compared and the calculated characteristics were compared with the experimental results. It was found that the proposed point methods best reflect the movement of heat in the soil profile.  soil thermal properties heat conduction model apparent thermal diffusivity boundary conditions comparison of methods 2021 6 01 51 61 http://maco.lu.ac.ir/article-1-63-en.pdf 10.52547/maco.2.1.5
3-71 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 An Extension of the Interpolation Theorem Seyyed Mohammad Tabatabaie sm.tabatabaie@qom.ac.ir Alireza Bagheri Salec r-bagheri@qom.ac.ir In this paper we prove the Riesz-Thorian interpolation theo-rem for weighted Orlicz and weighted Morrey Spaces. Interpolation Theorem Weighted Orlicz space Young function Weighted Morrey space. 2021 6 01 63 69 http://maco.lu.ac.ir/article-1-71-en.pdf 10.52547/maco.2.1.6
3-75 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Some Remarks on The Paper "Global Optimization in Metric Spaces With Partial Orders" Moosa Gabeleh gab.moo@gmail.com Jack Markin jmarkin@newmexico.com The aim of this note is to show that the main conclusion of a recent paper by Sadiq Basha [S. Sadiq Basha, Global optimization in metric spaces with partial orders, emph{Optimization, 63 (2014), 817-825}] can be obtained as a consequence of corresponding existing results in fixed point theory in the setting of partially ordered metric spaces. Moreover, by a similar approach, we prove that in the paper [V. Pragadeeswarar, M. Marudai, Best proximity points: approximation and optimization in partially ordered metric spaces, emph{Optim. Lett. 7 (2013), 1883–1892}] the results are not real generalizations but particular cases of existing fixed point theorems in the literature. partially ordered set proximally increasing mapping ordered proximal contraction best proximity point 2021 6 01 71 78 http://maco.lu.ac.ir/article-1-75-en.pdf 10.52547/maco.2.1.7
3-77 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Boundedness of Mikhlin Operator in Variable Exponent Morrey Space Morteza Koozehgar Kalleji m-koozehgarkalleji@araku.ac.ir S. G. Mikhlin proved the boundedness of the Fourier multiplier operator in the classical Lebesgue space if the multiplier function is a bounded function. In cite{MWW}, the authors obtained the same result of the classical Morrey space. In this paper, we prove that Mikhlin operator with bounded multiplier function is bounded operator on Morrey space with variable exponent which is containing the classical Lebesgue space with variable exponent and the classical Morrey space. Fourier multiplier operator variable exponent Morrey space bounded operator. 2021 6 01 79 85 http://maco.lu.ac.ir/article-1-77-en.pdf 10.52547/maco.2.1.8
3-76 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 A Note on Local Entropy of Random Dynamical Systems Mehdi Rahimi m10.rahimi@gmail.com Ahmad Shakouri shakourisamad@gmail.com Mohammad Mohammadi mm_math67@yahoo:.om In this paper, we review some properties of the entropy of random dynamical systems. We define a local entropy map for random dynamical systems and study some of its properties. We extract the entropy of random dynamical systems from the introduced map. Entropy local entropy Random Dynamical Systems. 2021 6 01 87 97 http://maco.lu.ac.ir/article-1-76-en.pdf 10.52547/maco.2.1.9
3-72 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Character amenability and character pseudo-amenability of certain Banach algebras kobra oustad kobra.ostad@gmail.com ‎In this paper‎, ‎we study character amenability of semigroup algebras `ell^{1}(S)` and weighted semigroup algebras $ ell^{1} (S,omega)$‎, ‎for a certain semigroups such as right(left) zero semigroup‎, ‎rectangular band semigroup‎, ‎band semigroup and uniformly locally finite inverse semigroup‎. ‎In particular‎, ‎we show that for a right (left) zero semigroup or a rectangular band semigroup‎, ‎character amenability‎, ‎amenability‎, ‎pseudo‎ - ‎amenability of $ ell^{1} (S,omega)$‎, ‎for each weight $ omega $‎, ‎are equivalent‎. ‎We also show that for an archimedean semigroup $ S $‎, ‎character pseudo‎ - ‎amenability‎, ‎amenability‎, ‎approximate amenability and pseudo-amenable of $ ell^{1}(S) $ are equivalent‎. character amenability character pseudo-amenable rectangular band semigroup archimedean semigroup. 2021 6 01 99 106 http://maco.lu.ac.ir/article-1-72-en.pdf 10.52547/maco.2.1.10
3-82 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Optimal inequalities for submanifolds in an $({varepsilon})$-almost para-contact manifolds Mohammed Danish Siddiqi msiddiqi@jazanu.edu.sa Ghodratallah Fasihi-Ramandi gh_fasihi@aut.ac.ir Mohammed Hasan mhhusain@jazanu.edu.sa ‎The present research paper is concerned about a couple of optimal inequalities for the Casorati curvature of submanifolds in an $({varepsilon})$-almost para-contact manifolds precisely $(varepsilon)$-Kenmotsu manifolds endowed with semi-symmetric metric connection (briefly says $SSM$) by adopting the T‎. ‎Opreachr('39')s optimization technique.‎ $({varepsilon})$-Kenmotsu manifold‎ ‎semi-symmetric metric connection‎ ‎Casorati curvatures‎ ‎submanifolds‎ 2021 6 01 107 118 http://maco.lu.ac.ir/article-1-82-en.pdf 10.52547/maco.2.1.11
3-80 2024-03-29 10.1002
Mathematical Analysis and Convex Optimization MACO 2717-0624 2717-0624 10.22034 2021 2 1 Polynomial differential quadrature method for numerical solution of the generalized Black-Scholes ‎equation ‎Zahra‎‎ ‎ sarvari zsarvari8‎@g‎mail‎.‎com Mojtaba Ranjbar ranjbar633@gmail.com Shahram Rezapour rezapourshahram@yahoo.ca In this paper‎, ‎the polynomial differential quadrature method (PDQM) is implemented to find the numerical solution of the generalized Black-Scholes partial differential equation‎. ‎The PDQM reduces the problem into a system of first order non-linear differential equations and then‎, ‎the obtained system is solved by optimal four-stage‎, ‎order three strong stability-preserving time-stepping Runge-Kutta (SSP-RK43) scheme‎. ‎Numerical examples are given to illustrate the efficiency of the proposed method‎. ‎Option pricing‎ ‎Generalized Black-Scholes equation‎ ‎Numerical solutions‎ ‎Polynomial differential quadrature method (PDQM)‎ ‎Runge-Kutta method. 2021 6 01 119 130 http://maco.lu.ac.ir/article-1-80-en.pdf 10.52547/maco.2.1.12