Elemente der Mathematik On maximum area polygons in a planar point set YataoDu and Ren Ding Yatao Du received her M.Sc. and Ph.D. degrees from Hebei Normal University in China. At present, she is teaching at Shijiazhuang Mechanical Engineering College in China. Her research interests focus primarily on discrete and combinatorial geometry. Ren Ding is a professor of mathematics and head of a Ph.D. program at Hebei Normal University in China. His research interests focus primarily on discrete and

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... combinatorial geometry. Let P be a finite planar point set with no three points collinear, i.e. in general position. A subset Q P is called a convex polygon in P if Q forms the vertex set of a convex