The Maximum Number of Edges in Geometric Graphs with Pairwise Virtually Avoiding Edges

被引:1
|
作者
Ackerman, Eyal [1 ]
Nitzan, Noa [2 ]
Pinchasi, Rom [2 ]
机构
[1] Univ Haifa, Dept Math Phys & Comp Sci, IL-36006 Tivon, Israel
[2] Technion Israel Inst Technol, Dept Math, IL-32000 Haifa, Israel
关键词
Geometric graph; Avoiding edges; Discharging method; Parallel edges; QUASI-PLANAR GRAPHS; PARALLEL EDGES;
D O I
10.1007/s00373-013-1335-7
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let G be a geometric graph on n vertices that are not necessarily in general position. Assume that no line passing through one edge of G meets the relative interior of another edge. We show that in this case the number of edges in G is at most 2n-3.
引用
收藏
页码:1065 / 1072
页数:8
相关论文
共 50 条
  • [31] Geometric graphs with no three disjoint edges
    Cerny, J
    DISCRETE & COMPUTATIONAL GEOMETRY, 2005, 34 (04) : 679 - 695
  • [32] Geometric Graphs with Few Disjoint Edges
    G. Tóth
    P. Valtr
    Discrete & Computational Geometry, 1999, 22 : 633 - 642
  • [33] Generalized thrackles and geometric graphs in R3 with no pair of strongly avoiding edges
    Perlstein, Amitai
    Pinchasi, Rom
    GRAPHS AND COMBINATORICS, 2008, 24 (04) : 373 - 389
  • [34] Maximum number of edges in claw-free graphs whose maximum degree and matching number are bounded
    Dibek, Cemil
    Ekim, Tinaz
    Heggernes, Pinar
    DISCRETE MATHEMATICS, 2017, 340 (05) : 927 - 934
  • [35] Bounding the number of edges in permutation graphs
    Keevash, P
    Loh, PS
    Sudakov, B
    ELECTRONIC JOURNAL OF COMBINATORICS, 2006, 13 (01):
  • [36] Number of edges in inhomogeneous random graphs
    Zhishui Hu
    Liang Dong
    Science China Mathematics, 2021, 64 : 1321 - 1330
  • [37] SATURATED GRAPHS WITH MINIMAL NUMBER OF EDGES
    KASZONYI, L
    TUZA, Z
    JOURNAL OF GRAPH THEORY, 1986, 10 (02) : 203 - 210
  • [38] On the Extremal Number of Edges in Hamiltonian Graphs
    Ho, Tung-Yang
    Lin, Cheng-Kuan
    Tan, Jimmy J. M.
    Hsu, D. Frank
    Hsu, Lih-Hsing
    JOURNAL OF INFORMATION SCIENCE AND ENGINEERING, 2011, 27 (05) : 1659 - 1665
  • [39] Number of edges in inhomogeneous random graphs
    Zhishui Hu
    Liang Dong
    Science China(Mathematics), 2021, 64 (06) : 1321 - 1330
  • [40] Number of edges in inhomogeneous random graphs
    Hu, Zhishui
    Dong, Liang
    SCIENCE CHINA-MATHEMATICS, 2021, 64 (06) : 1321 - 1330