Daniel Pedoe

Biography

Dan Pedoe, born on October 29, 1910, in London, England, became one of the 20th century's most productive and easy-to-understand writers on geometry. He began his education at the Central Foundation Boys' School and then attended Magdalene College at the University of Cambridge, where he built the mathematical foundation for his long career. He also spent time at the Institute for Advanced Study, furthering his academic work. Pedoe passed away on October 27, 1998, in Saint Paul, Minnesota, just two days shy of his eighty-eighth birthday.

Pedoe’s career lasted over sixty years, during which he wrote about fifty research and expository papers, mainly about geometry. He taught at various institutions in the UK and later in the US, becoming a respected teacher known for his ability to explain complex mathematical ideas clearly and enthusiastically. His dedication to both thorough research and clear writing set him apart from many of his peers.

One of his most important contributions was co-authoring, with W. V. D. Hodge, the three-volume Methods of Algebraic Geometry. This challenging work became a standard reference in algebraic geometry for many mathematicians. Pedoe also wrote several books for wider audiences, including The Gentle Art of Mathematics, Circles: A Mathematical View, and Geometry and the Visual Arts, the latter of which explored mathematical ideas in art and visual perception. These books stayed in print for many years and were translated into several languages.

Pedoe also worked with Japanese mathematician Hidetoshi Fukagawa on Japanese Temple Geometry Problems: San Gaku, a book that introduced Western mathematicians to the tradition of sangaku—geometric problems displayed on wooden tablets in Japanese temples during the Edo period. This project showed Pedoe's curiosity and his interest in connecting math across cultures. In 1968, he received the Paul R. Halmos and Lester R. Ford Award from the Mathematical Association of America for outstanding expository articles in mathematics.

Pedoe's inequality, named after him, is a geometry result about triangles and their areas, and it's one of the contributions he is known for in mathematical literature. Throughout his life, Pedoe showed that geometry, though often seen as an ancient and established field, still offered new discoveries, elegant proofs, and real intellectual challenges.