Acknowledgments

A word of thanks

Thank you to everyone who provided feedback, suggestions, and encouragement on these pages -- especially my excellent colleagues Prof's Mintchev and Shah, and our inimitable student Lionel Gilliar-Schoenenberger. Of course all the flaws and shortcomings are my responsibility, particularly those that arise from not following through on some of the worthy aforementioned suggestions.

In gratitude,
Robert Smyth.