Large steps in inverse rendering of geometry

B Nicolet, A Jacobson, W Jakob - ACM Transactions on Graphics (TOG), 2021 - dl.acm.org
Inverse reconstruction from images is a central problem in many scientific and engineering
disciplines. Recent progress on differentiable rendering has led to methods that can …

Energy minimization related to the nonlinear Schrödinger equation

N Raza, S Sial, SS Siddiqi, T Lookman - Journal of Computational Physics, 2009 - Elsevier
In this the window of the Sobolev gradient technique to the problem of minimizing a
Schrödinger functional associated with a nonlinear Schrödinger equation. We show that …

A study on single-iteration sobolev descent for linear initial value problems

S Sial, AR Seadawy, N Raza, A Khan… - Optical and Quantum …, 2021 - Springer
Mahavier and Montgomery construct a Sobolev space for approximate solution of linear
initial value problems in a finite difference setting in single-iteration sobolev descent for …

Approximating time evolution related to Ginzburg–Landau functionals via Sobolev gradient methods in a finite-element setting

N Raza, S Sial, S Siddiqi - Journal of Computational Physics, 2010 - Elsevier
Approximating time evolution related to Ginzburg–Landau functionals via Sobolev gradient
methods in a finite-element setting - ScienceDirect Skip to main contentSkip to article Elsevier …

Sobolev gradient approach for the time evolution related to energy minimization of Ginzburg–Landau functionals

N Raza, S Sial, SS Siddiqi - Journal of Computational Physics, 2009 - Elsevier
The Sobolev gradient technique has been discussed previously in this journal as an efficient
method for finding energy minima of certain Ginzburg–Landau type functionals [S. Sial, J …

Application of Sobolev gradient method to solve Klein Gordon equation

N Raza - Punjab University Journal of Mathematics, 2020 - journals.pu.edu.pk
To find the minima of an energy functional, is a well known problem in physics and
engineering. Sobolev gradients have proven to be affective to find the critical points of a …

Approximate Solution of Nonlinear Klein‐Gordon Equation Using Sobolev Gradients

N Raza, AR Butt, A Javid - Journal of Function Spaces, 2016 - Wiley Online Library
The nonlinear Klein‐Gordon equation (KGE) models many nonlinear phenomena. In this
paper, we propose a scheme for numerical approximation of solutions of the one …

[HTML][HTML] Numerical approximation of time evolution related to Ginzburg–Landau functionals using weighted Sobolev gradients

N Raza, S Sial, AR Butt - Computers & Mathematics with Applications, 2014 - Elsevier
Sobolev gradients have been discussed in Sial et al.(2003) as a method for energy
minimization related to Ginzburg–Landau functionals. In this article, a weighted Sobolev …

Recursive form of Sobolev gradient method for ODEs on long intervals

D Mujeeb, JW Neuberger, S Sial - International Journal of …, 2008 - Taylor & Francis
The Sobolev gradient method has been shown to be effective at constructing finite-
dimensional approximations to solutions of initial-value problems. Here we show that the …

Numerical solutions of integro-differential equations using Sobolev gradient methods

N Raza, S Sial, JW Neuberger… - International Journal of …, 2012 - World Scientific
A numerical procedure for solving a class of integro-differential equations of Volterra type
using the Sobolev gradient method is presented. Results are compared with those from the …