dc.description.abstract | I am very grateful to the African Institute of Mathematical Sciences (AIMS),
Cape Town, South Africa, which hosted me on a research visit during which
some parts of this book have been written. I would also like to thank the edito-
rial team of this book under the leadership of publisher, Randi Cohen, for their
continuous assistance in formatting, coordinating, editing, and directing the
book throughout all stages. Special thanks go to all professors who taught me
the courses of numerical analysis in the various stages of my under- and post-
graduate studies, and, in particular, I thank Dr. Mohsin Hashim University of
Preface.
Khartoum, Professor Arieh Iserles African Institute of Mathematical Sciences,
Professor Kailash Patidar University of the Western Cape in Cape Town, and
the spirit of my great teacher Professor David Mackey (Cambridge University
and the African Institute for Mathematical Sciences) who passed away four
years ago. Finally, I am also grateful to my family for continuous encourage-
ment and patience while writing this book. | vi |