Foundations of projective geometry;: Lecture notes, Harvard University
Robin Hartshorne is a professor of mathematics, emeritus, at the University of California at Berkeley. His area of research is algebraic geometry, about which he has written a textbook and many research articles. He also has a life-long interest in elementary geometry, starting from his class in mechanical drawing in the fifth grade of elementary school. Recently, based on a course he taught at Berkeley, he wrote a text of Euclidean and non-Euclidean geometry, called Geometry, Euclid and Beyond. Aside from mathematics, he is a musician (flute, piano, shakuhachi), and an avid mountain climber. He also likes languages, speaking fluent English, French, German and Japanese. His wife, Edie, is a therapist, musician, and author. They have two children, Ben, a computer systems engineer, and Joemy, a third grade elementary school teacher.--This text refers to an alternatePaperbackedition.