David Angell Libri

Exploring the journey of irrational numbers, the narrative spans from their discovery in Pythagorean times to the 20th-century advancements by Baker and Mahler on transcendence. Key themes include the nature of irrationality, the distinction between algebraic and transcendental numbers, and the role of continued fractions in approximating real numbers with rationals, offering a comprehensive view of mathematical evolution and thought.

This book collects the very best of the almost 1800 problems and puzzles published in Parabola magazine into a single volume. Many of the problems have been re-mastered, and new illustrations have been added. Topics covered range across geometry, number theory, combinatorics, logic, and algebra.