This quantity is an outcomeof invited lecturesdelivered on the Ring concept part of the twenty third Ohio State-DenisonConferencein may perhaps 1996. It additionally includes articles through a few invited mathematicianswho couldn't attend the
convention. those peer-refereedarticles showcasethe newest developmentsand tendencies in classicalRing idea, highlighting the cro- fertilization of recent techniquesand ideaswith the present ones. supplying a large choice of
methodologies,this quantity can be worthy either to graduatestudentsas good as to specialistsin Ring idea. we want to thank our colleagueswho investeda lot in their time to make the conferencea nice good fortune. In
specific, our thank you visit ProfessorsTom Dowling, Dan Sanders,SurinderSehgal,Ron Solomonand Sergio R. L6pez-Permouthfor their support. The monetary help for the Conference,provided by way of the Departmentof Mathematics,The Ohio
kingdom collage, and MathematicsResearchInstitute, Columbus, is gratefully acknowleged. Many thanksgo to Dean Violet I. Meek for her dedication to the promoting of researchby her continuousencouragement of such efforts and
for offering monetary aid from the Lima campusof The Ohio StateUniversity. We havereceivedimmensecooperationfrom all of the refereeswho, meticulouslyand in a truly short while, supplied us with their reviews inspite of their
busy schedules. We expressour sincerethanks to them all. eventually, we thank Ms. Cindy White for her first-class activity in typing elements of this quantity. we're pleasedto dedicatethis quantity to ProfessorBruno J. Miiller on the
occasionof his retirementfor his many contributionsto the idea of jewelry and Modules. As this quantity used to be going to presswe have realized that ProfessorCarl religion is retiring this year.