Reuben Goodstein


Reuben Louis Goodstein was an English mathematician with an interest in the philosophy and teaching of mathematics.

Education

Goodstein was educated at St Paul's School, London. He received his Master's degree from Magdalene College, Cambridge. After this, he worked at the University of Reading but ultimately spent most of his academic career at the University of Leicester. He earned his PhD from the University of London in 1946 while still working in Reading.
Goodstein also studied under Ludwig Wittgenstein. Wittgenstein selected Goodstein and others to take notes of his lectures, the collection of which later became The Blue Book.

Research

He published many works on finitism and the reconstruction of analysis from a finitistic viewpoint, for example "Constructive Formalism. Essays on the foundations of mathematics." Goodstein's theorem was among the earliest examples of theorems found to be unprovable in Peano arithmetic but provable in stronger logical systems. He also introduced a variant of the Ackermann function that is now known as the hyperoperation sequence, together with the naming convention now used for these operations.
Besides mathematical logic, mathematical analysis, and the philosophy of mathematics, Goodstein was keenly interested in the teaching of mathematics. From 1956 to 1962 he was editor of The Mathematical Gazette. In 1962 he was an invited speaker at the International Congress of Mathematicians in Stockholm. Among his doctoral students are Martin Löb and Alan Bundy.

Publications