authors

R.L.Goodstein
is professor of pure mathematics at the University of Leicester. He has written a number of articles popularising mathematics, including a number of essays on the philosophy of mathematics, his main research interest, in the Mathematical Gazette.

H. Halberstam
is professor of pure mathematics at Nottingham University. His main research interest is in elementary and analytic number theory, and part icularly in sieve methods. He and K. Roth wrote a book on Sequences. At present he is writing a book with H. E. Richert.

R. Hart
is a lecturer at Leeds University. The mathematics department there is most renowned for its ring theory group under Professor Goldie. Dr. Hart's main interest is in Noetherian rings.

Douglas Woodall
is a research fel-low in combinatorics at Nottingham. He has written a number of articles for Eureka. He sings in a choir and enjoys walking - he 'did' the Penine way last summer.

betel
is a mathematics undergraduate at Warwick University. His name is derived from the star 'betelgeuse' in the constellation of Orion, which isn't officially pronounced 'beetle-juice' but ought to be.

Chris Rowley
met his true love through group theory. They are both reseaching under the supervision of Graham Higman at Oxford. Chris is attached to Christchurch College, next to the famous meadow. Amongst his outside interests are punting and watching cricket in the Park (which has a beer tent licensed all day on such days).

Tim Poston
was an undergraduate at Hull University. During his first postgraduate year there he was president of the union until he resigned in the summer, frustated by bureaucracy. He wrote an article in 'Education for Democracy', edited by D.Rubinstein. He has just completed his thesis at Warwick University, where he.has been working under Chris Zeeman.

Tony Norris
devised the chess problems in this issue.

THANKS are due to: Avril Dennis, Dinah Forth, Ruthie Tucker, Graham Winter and Martin Woodward