**Dr. Guanshen
Ren**

Department
of Mathematics

College
of St. Scholastica

Duluth,
MN 55811

Phone:
(218)-723-6461 (O)

e-mail:
gren@css.edu

__EDUCATION__

Ph.D. in
mathematics, University of South Carolina, Columbia, 8/90

Research Interests: Topology, Functional
Analysis and Geometry

Advisor: Professor Peter Nyikos

M.A. in mathematics, Miami University, Ohio,
8/85

__TEACHING
EXPERIENCE__

02-present,
Professor of the Mathematics Department, College of St. Scholastica

98-07, Chair of the
Mathematics Department

98-02, Coordinator of the Secondary Math
Education Program

96-02, Associate professor in the Mathematics
Department, College of St. Scholastica

90-96, Assistant Professor in the Mathematics
Department, College of St. Scholastica

__SELECTED
PUBLICATIONS__

Ren, G. "Proof Without Words: An Inequality", The College Mathematics Journal, Vol. 40, No. 4, 2009

Ren, G.
"One Cut, Two Halves, Three Questions"; __Mathematics Teacher,__
Vol.103, No. 4, 2009

Ren, G. "The
Pythagorean Theorem and Beyond: A Classification of Shapes of Triangles"; __The
College Mathematics Journal,__ Vol. 35, No. 4, 2004

Ren, G. "On
Fixed Point Properties"; __The Far East Journal of Mathematical Sciences,__
Vol. 5, No. 1, 2002

Ren, G.** "**On
Spherical Completion of Nonarchimedean Normed Linear Spaces"; __The Far
East Journal of Mathematical Sciences,__ Vol. 1, No. 6, 1999

Ren, G. "Proof
Without Words: tan (A-B)"; __The College Mathematics Journal,__ Vol.
30, No. 3, 1999

Ren, G.
"Geometric Evaluation of a Limit"; __The College Mathematics Journal__,
Vol. 28, No. 3, 1997

Chen, J., Li, L.
and Ren, G. "A Note on Order Consistent Topology"; __Far East
Journal of Mathematical Science__, Vol. 4, No. 2, 1996

Ren, G. "Match
Geometric Figures with Trigonometric Identities"; __Mathematics Teacher__,
Vol. 88, No. 1, 1995

Ren, G. "A
Version of the Banach-Steinhaus Theorem in Nonarchimedean Normed Linear Spaces
over Fields of Arbitrary Rank"; __Mathematics Journal of Toyama
University__, Japan, Vol.17, 1994

Ren, G. "A
Continuous Extension Theorem in Linearly Ordered Spaces and Related
Questions"; __Questions and Answers in General Topology;__ Vol. 11. No.
2. 1993

Ren, G. "A
Note on (**QxQ**)U(**IxI**)"; __Questions and Answers in General
Topology__, Vol. 10. No. 2. 1992, the Japan Symposium of General Topology,
Osaka, Japan

Ren, G.
"Nonarchimedean Normed Linear Spaces"; __Papers on General Topology
and Applications,__ Annuals of the New York Academy of Science, Vol. 659,
1992