• 제목/요약/키워드: semi-preconvex sets

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SEMI-PRECONVEX SETS ON PRECONVEXITY SPACES

  • Min, Won-Keun
    • 대한수학회논문집
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    • 제23권2호
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    • pp.251-256
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    • 2008
  • In this paper, we introduce the concept of the semi-preconvex set on preconvexity spaces. We study some properties for the semi-preconvex set. Also we introduce the concepts of the sc-convex function and $s^*c$-convex function. Finally, we characterize sc-convex functions, $s^*$-convex functions and semi-preconvex sets by using the co-convexity hull and the convexity hull.