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Professor Joel Moitsheki，School of Computational & Applied Mathematics at South Africa's Wits University（图）
Professor Joel Moitsheki School of Computational & Applied Mathematics at South Africa's Wits University
2014/12/31
Professor Joel Moitsheki，School of Computational & Applied Mathematics at South Africa's Wits University,Research Interests
My interests are into non-linear Applied Partial Differential Equations (PD...
The computational complexity of recognising embeddings in finitely presented groups
Finitely presented groups embeddings Kleene’s arithmetical hierarchy decidability universal finitely presented group
2011/8/29
Abstract: We extend a result by Lempp that recognising torsion-freeness for finitely presented groups is $\Pi^{0}_{2}$-complete; we show that the problem of recognising embeddings of finitely presente...
Lyapunov Computational Method for Two-Dimensional Boussinesq Equation
Lyapunov Computational Method Two-Dimensional Boussinesq Equation
2010/11/11
A numerical method is developed leading to Lyapunov operators to approximate the solution of two-dimensional Boussinesq equation. It consists of an order reduction method and a finite difference disc...
Computational LPPL Fit to Financial Bubbles
LPPL Fit Financial Bubbles log-periodic power law
2010/4/27
The log-periodic power law (LPPL) is a model of asset prices during endogenous bubbles. If the on-going development of a bubble is suspected, asset prices can be fit numerically to the LPPL law. The b...