We investigate in this paper the poidge-convexity, which is a generalization of right convexity, introduced by one of the present authors in 2014. Although not every convex body is poidge-convex, there are many families of compact sets, some of them very different from convex bodies, which are poidge-convex. We present here several such families.

Contact details are reproduced from the original publication and may be historical.

Bo Wang

School of Mathematical Sciences, Hebei Normal University, Shijiazhuang, P. R. China
and: Hebei Key Laboratory of Computational Mathematics, Shijiazhuang, P. R. China

bow6666@163.com

Liping Yuan

School of Mathematical Sciences, Hebei Normal University, Shijiazhuang, P.R.China
and: Hebei Int. Research Center, Mathematics and Interdisciplinary Science, Shijiazhuang, P.R.China

lpyuan@hebtu.edu.cn

Tudor Zamfirescu

Fachbereich Mathematik, Universität Dortmund, Germany, Germany
and: Romanian Academy, Bucharest, Romania
and: School of Mathematical Sciences, Hebei Normal University, Shijiazhuang, P.R.China

tuzamfirescu@gmail.com

B. Wang, L. Yuan, T. Zamfirescu. “Poidge-Convexity.” Journal of Convex Analysis 28 (2021), No. 4, 1155–1170.