October 1975 October 31, 1975 mathNEWS Editor Click through to view the PDFs for: mathNEWS-9-4 (October 3, 1975) mathNEWS-9-5 (October 10, 1975) mathNEWS-9-6 (October 24, 1975) mathNEWS-9-7 (October 31, 1975)