

13  Commutative rings and algebras, and
16  Associative rings and algebras,
American Mathematical Society (AMS) Mathematics Subject Classifications
List of Publications.
Latest publication: Algebraic Geometry: A Problem Solving Approach
Currently teaching
Recent past courses
Wallis' product. A talk given to the student chapter of the MAA at Missouri State University.
Postal Address
Department of Mathematics RBelshoff at MissouriState.edu 
Telephone
Office: (417) 8365374 OfficeCheek Hall 71M 
This comic taken from xkcd.