Search Results - "Rabago, Julius Fergy T."
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A second-order shape optimization algorithm for solving the exterior Bernoulli free boundary problem using a new boundary cost functional
Published in Computational optimization and applications (01-09-2020)“…The exterior Bernoulli problem is rephrased into a shape optimization problem using a new type of objective function called the Dirichlet-data-gap cost…”
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2
An improved shape optimization formulation of the Bernoulli problem by tracking the Neumann data
Published in Journal of engineering mathematics (15-08-2019)“…We propose a new shape optimization formulation of the Bernoulli problem by tracking the Neumann data. The associated state problem is an equivalent…”
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Comoving mesh method for certain classes of moving boundary problems
Published in Japan journal of industrial and applied mathematics (01-12-2022)“…A Lagrangian-type numerical scheme called the “comoving mesh method” or CMM is developed for numerically solving certain classes of moving boundary problems…”
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4
Shape optimization approach to defect-shape identification with convective boundary condition via partial boundary measurement
Published in Japan journal of industrial and applied mathematics (01-01-2019)“…We aim to identify the geometry (i.e., the shape and location) of a cavity inside an object through the concept of thermal imaging. More precisely, we present…”
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Numerical solution to the exterior Bernoulli problem using the Dirichlet-Robin energy gap cost functional approach in two and three dimensions
Published in Numerical algorithms (01-09-2023)“…The exterior Bernoulli problem — a prototype stationary free boundary problem — is rephrased into a shape optimization setting using an energy-gap type cost…”
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On the Second-Order Shape Derivative of the Kohn-Vogelius Objective Functional Using the Velocity Method
Published in International Journal of Differential Equations (01-01-2015)“…The exterior Bernoulli free boundary problem was studied via shape optimization technique. The problem was reformulated into the minimization of the so-called…”
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7
Boundary shape reconstruction with Robin condition: existence result, stability analysis, and inversion via multiple measurements
Published in Computational & applied mathematics (01-07-2024)“…This study revisits the problem of identifying the unknown interior Robin boundary of a connected domain using Cauchy data from the exterior region of a…”
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Well-defined solutions of a system of difference equations
Published in Journal of applied mathematics & computing (01-02-2018)“…This note deals with the solution form of the system of difference equations x n + 1 = a x n y n - 1 y n - α + β , y n + 1 = b x n - 1 y n x n - β + α , n ∈ N…”
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Solution form of a higher‐order system of difference equations and dynamical behavior of its special case
Published in Mathematical methods in the applied sciences (15-07-2017)“…The solution form of the system of nonlinear difference equations xn+1=xn−k+1pynayn−kp+byn,yn+1=yn−k+1pxnαxn−kp+βxn,n∈N0,p,k∈N, where the coefficients a,b,α,β…”
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On the new coupled complex boundary method in shape optimization framework for solving stationary free boundary problems
Published 15-11-2022“…We expose here a novel application of the so-called coupled complex boundary method -- first put forward by Cheng et al. (2014) to deal with inverse source…”
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On an Open Question Concerning Product-Type Difference Equations
Published in Iranian journal of science and technology. Transaction A, Science (01-09-2018)“…In Yang et al. (Acta Math Univ Comenianae LXXX(1):63–70, 2011 ), Yang, Chen, and Shi examined the system of difference equations: x n = a y n - p , y n = b y n…”
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On the solutions of a second-order difference equations in terms of generalized Padovan sequences
Published 31-12-2016“…This paper deals with the solution, stability character and asymptotic behavior of the rational difference equation \begin{equation*} x_{n+1}=\frac{\alpha…”
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13
Solution Form of a Higher Order System of Difference Equation and Dynamical Behavior of Its Special Case
Published 27-03-2016“…The solution form of the system of nonlinear difference equations \begin{equation*} x_{n+1} = \frac{x_{n-k+1}^{p}y_{n}}{a y_{n-k}^{p}+b y_{n}},\ y_{n+1} =…”
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14
On Generalized Fibonacci Numbers
Published 18-03-2015“…Applied Mathematical Sciences, Vol. 9, 2015, no. 52, 2595 - 2607 We provide a formula for the $n^{th}$ term of the $k$-generalized Fibonacci-like number…”
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15
Numerical solution to a free boundary problem for the Stokes equation using the coupled complex boundary method in shape optimization settings
Published 23-02-2023“…A new reformulation of a free boundary problem for the Stokes equations governing a viscous flow with overdetermined condition on the free boundary is…”
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On the Closed-Form Solution of a Nonlinear Difference Equation and Another Proof to Sroysang's Conjecture
Published 22-04-2016“…The purpose of this paper is twofold. First, we derive theoretically, using appropriate transformation on $x_n$, the closed-form solution of the nonlinear…”
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Forbidden Set of the Rational Difference Equation $x_{n+1} = x_n x_{n-k}/(ax_{n-k+1} +x_n x_{n-k+1} x_{n-k})
Published 20-04-2016“…This short note aims to answer one of the open problems raised by F. Balibrea and A. Cascales in \cite{bc}. In particular, the forbidden set of the nonlinear…”
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18
Olver's Method for Approximating Roots of p-Adic Polynomials Equations
Published 19-02-2016“…Let $\mathbb{Z}_p[x]$ be the set of all functions whose coefficients are in the field of $p$-adic integers $\mathbb{Z}_p$. This work considers a problem of…”
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Effective Methods on Determining the Periodicity and Form of Solutions of Some Systems of Nonlinear Difference Equations
Published 04-12-2015“…Recently, various systems of nonlinear difference equations, of different forms, were studied. In this existing work, two earlier published papers, due…”
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On Two Nonlinear Difference Equations
Published 08-12-2015“…The behavior of solutions of the following nonlinear difference equations \[ x_{n+1}=\displaystyle\frac{q}{p+x_n^{\nu}} \quad \text{and} \quad…”
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