books.google.co.uk - Arthur Cayley (1821–1895) was one of the most prolific and important mathematicians of the Victorian era. His influence still pervades modern mathematics, in group theory (Cayley's theorem), matrix algebra (the Cayley-Hamilton theorem), and invariant theory, where he made his most significant contributions....http://books.google.co.uk/books/about/Arthur_Cayley.html?id=ptv1Ux9rEOgC&utm_source=gb-gplus-shareArthur Cayley
