Draft:Cun-Quan Zhang

Cun-Quan Zhang (born 1952) is a mathematician working mainly in graph theory, currently a professor emeritus at the West Virginia University.

Education
Cun-Quan Zhang was admitted by Simon Fraser University in 1982, earned his Ph.D. (mathematics) in 1986 under the supervision of Prof. Brian Alspach.

Biography
In 1987, Zhang joined the faculty of West Virginia University, where he was promoted to Associate Professor in 1989 and Professor in 1996 and Eberly Distinguished Professor in Mathematics, 2009

He served in Editorial Committees of some journals.

Research
Zhang is known for his work in graph theory, and particularly for some works in the subjects of nowhere-zero flow problems, cycle double cover problems, Hamilton cycle problems: see Zhang's publications on AMS' MATHSCINET and on Google Scholar.

Some major results in Zhang's research include the following: . And other major results,
 * Cycle double cover conjecture. He (collaborated with  Brian Alspach) proved that every graph without the Petersen minor has a cycle double cover.
 * Nowhere-zero flow. He (collaborated with  László M Lovász,  Carsten Thomassen, Yezhou Wu) proved that every 6-connected graph admits a nowhere-zero-3-flow, which is the best partial result to Tutte’s 3-flow conjecture And other major results,
 * Hamilton cycle problems for graphs, especially his method of vertex inserting

Awards and honors
Zhang has won Benedum Distinguished Scholar Award (1997-1998) from West Virginia University and is appointed as Eberly Distinguished Professor of Mathematics in 2009.