helly 中文意思是什麼
helly
解釋
埃利-
The theorem states that for a finite family a of at least d + 1 convex sets in r ~ ( d ), if every d + 1 members of a have a point in common, then there is a point common to all the members of a. there are many gener - alizations of helly theorem
這些問題的共同特點是由幾何元素出發，研究其抽象的關聯性質。 helly定理是組合幾何中一個非常重要的定理，由其衍生出的多種多樣的問題統稱helly型問題。 -
In this disser - tation we discuss two typical problems in the combinatorial geometry mentioned in [ 12 ]. helly ' s theorem plays a very important role in combinatorial geome - try
本文就其中兩類典型問題加以討論：一類是helly型問題和幾何橫截問題，另一類是嵌入與覆蓋問題。 -
In chapter 4 we obtain the helly number for hyperplane transversal to translates of a convex cube in r ~ ( d ). where we prove that the helly number for such families is 5 when d = 2, and is greater than or equal to d + 3 when d 3
在第4章中我們探討了o中超平面橫截單位立方體平移形成的集族的heily數，證得碑中此heily數為5 ，在呼中此heily數z民並推廣至呼，在胸中此heily數d 3
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