l problems meaning in English
组合问题
Examples
- In chapter 3 we obtain a new upper bound for " k - l problem " concerning line transversal to unit disks in the plane , where we prove that for a finite disjoint family f of unit disks in the plane , there is a line intersecting all but at most 5 members of f suppose that even " three of the members admit a line transversal . thus we improve the latest upper bound 12
在第3章中我们讨论了直线横截的有关问题，给出了单位圆“ k l ”问题的一个新上界，即证明了对于平面上有限个两两不交的单位圆形成的集族，若其中任三个单位圆可被一直线横截，则存在一条直线至多不与此集族中的5个单位圆相交，从而改进了原有上界12