Critchley, R.H. 1972-73 Student; 1974-75 Scholar Born 1948 London, England. D.Phil. 1974 Oxford. Appointments: Assistant Lect.,Cork 1975-77; Lect. N.I.H.E., Limerick 1977-86; Senior Lect., Univ. Limerick 1986-. Memberships: Institute of Mathematics and Its Applications; Irish Mathematical Society; S.E.F.I. Mathematics Working Group. Address: Department of Mathematics and Statistics, University of Limerick, Limerick, Ireland. E-mail: critchleyr_at_ul.ie