Tristan Needham
Encyclopedia
Tristan Needham is a mathematician
Mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

 and author of the
book Visual Complex Analysis in which he uses a geometric approach to develop complex analysis
Complex analysis
Complex analysis, traditionally known as the theory of functions of a complex variable, is the branch of mathematical analysis that investigates functions of complex numbers. It is useful in many branches of mathematics, including number theory and applied mathematics; as well as in physics,...

 (which he says was inspired by Isaac Newton
Isaac Newton
Sir Isaac Newton PRS was an English physicist, mathematician, astronomer, natural philosopher, alchemist, and theologian, who has been "considered by many to be the greatest and most influential scientist who ever lived."...

's original geometric approach to ordinary calculus
Calculus
Calculus is a branch of mathematics focused on limits, functions, derivatives, integrals, and infinite series. This subject constitutes a major part of modern mathematics education. It has two major branches, differential calculus and integral calculus, which are related by the fundamental theorem...

).

He is the son of social anthropologist Rodney Needham
Rodney Needham
Rodney Needham was one of the leading British social anthropologists.Born as Rodney Phillip Needham Green, Needham changed his name in 1947,the same year he married Claudia Brysz....

, and grew up in Oxford, England. Needham was a student of Roger Penrose
Roger Penrose
Sir Roger Penrose OM FRS is an English mathematical physicist and Emeritus Rouse Ball Professor of Mathematics at the Mathematical Institute, University of Oxford and Emeritus Fellow of Wadham College...

 at the Mathematical Institute and is currently a professor of mathematics at the University of San Francisco
University of San Francisco
The University of San Francisco , is a private, Jesuit/Catholic university located in San Francisco, California. Founded in 1855, USF was established as the first university in San Francisco. It is the second oldest institution for higher learning in California and the tenth-oldest university of...

.
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