[.ca] Introduction to Mathematical Finance: Discrete Time Models (ISBN 1557869456)

Clear & concise:
Pliska's book lays out the fundamentals of discrete time models in a clear and concise manner. The book is mostly self contained and well supported with examples that enhance understanding. I read it as a part of my introductory Phd finance course along with Theory of Financial Decision Making by Ingersoll and Foundations for Financial Economics Huang & Litzenberger (not direct competitors) and found Pliska's book to be the most understandable of the three.