Acknowledgements Acknowledgements
Drawings of Alfred Hale, Robert Jewett, Richard Rado, Frank Ramsey, Issai Schur, and Bartel van der Waerden were created by Ms. Kyra Pukanich under my directions.
The drawing of Frank Ramsey displayed at the end of Section 1.3 was created by Mr. Simon Roy under my directions.
I am grateful to Professor Tom Brown, Ms. Jana Caine, Ms. Ha Thu Nguyen, and Mr. Andrew Poelstra for their comments and suggestions which have been very helpful in improving the manuscript.
I would like to acknowledge the following colleagues for their help in creating the PreTeXt version of the text.
Jana Caine, Simon Fraser University
David Farmer, American Institute of Mathematics
Sean Fitzpatrick , University of Lethbridge
Damir Jungic, Burnaby, BC
I am particularly thankful to Dr. Sean Fitzpatrick for inspiring and encouraging me to use PreTeXt.
Veselin Jungic