Recent Submissions to Conference Proceedings

Introduction to Graph Pebbling and Rubbling.                 Nandor Sieben (Northern Arizona University) Models of Discrete Conformal Geometry.                         William E. Wood (University of Northern Iowa) Infinite Groups and Primitivity of their Group Rings.            Tsunekaze Nishinaka (University of Hyogo) Multiplicative Sets of Idempotents in a Semilocal Ring.     Yasuyuki Hirano (Naruto University of Education)