I am a lecturer in the School of Mathematics at Trinity College, Dublin. My office is number 3.9 at 18 Westland Row. The telephone number is +353-1-896 1983. Mail should be addressed to
John Stalker School of Mathematics, TCD Dublin 2, IRELAND
email addressed to stalker@maths.tcd.ie and faxes sent to +353-1-896 2282.