1. Emanation Graph: A Plane Geometric Spanner with Steiner Points

   • Bardia Hamedmohseni
   • Zahed Rahmati
   • Debajyoti Mondal

   Original Paper 31 March 2023 Article: 38

   

2. Panconnectivity in Bipartite Graphs with Large Degree sum

   • Masao Tsugaki
   • Tomoki Yamashita
   • Takamasa Yashima

   Original Paper 28 March 2023 Article: 37

   

3. On Euclidean Distances and Sphere Representations

   • Lon Mitchell

   Original Paper 22 March 2023 Article: 36

   

4. A Note on the Rank of Inclusion Matrices

   • Tao Feng
   • Shenwei Huang

   Original Paper 19 March 2023 Article: 35

5. Partition and Disjoint Cycles in Digraphs

   • Chunjiao Song
   • Jin Yan

   Original Paper 18 March 2023 Article: 34

6. A Simple Proof of Ore’s Theorem on the Maximum Size of k-connected Graphs with Given Order and Diameter

   • Leilei Zhang

   Original Paper 16 March 2023 Article: 33

7. Sum Index, Difference Index and Exclusive Sum Number of Graphs

   • John Haslegrave

   Original Paper Open access 13 March 2023 Article: 32

   

8. 2-(Edge-)Connected Edge Domination Number and Matching Number

   • Hengzhe Li
   • Ankang Wei
   • Shenggui Zhang

   Original Paper 12 March 2023 Article: 31

9. Two Completely Independent Spanning Trees of \(P_4\)-Free Graphs

   • Xiaodong Chen
   • Jingjing Li
   • Fuliang Lu

   Original Paper 12 March 2023 Article: 30

   

10. On Graphs of Order n with Metric Dimension \(n-4\)

    • Juan Wang
    • Fenglei Tian
    • Lianying Miao

    Original Paper 06 March 2023 Article: 29

    

11. The Odd Chromatic Number of a Planar Graph is at Most 8

    • Jan Petr
    • Julien Portier

    Original Paper Open access 06 March 2023 Article: 28

    

12. Minimum Number of Edges Guaranteeing the Existence of a \(K_{1, t}\)-Factor in a Graph

    • Shuya Chiba
    • Yoshimi Egawa
    • Shinya Fujita

    Original Paper 25 February 2023 Article: 27

    

13. The Ramsey Number for a Forest Versus Disjoint Union of Complete Graphs

    • Sinan Hu
    • Yuejian Peng

    Original Paper 25 February 2023 Article: 26

    

14. Turán Problems for k-Geodetic Digraphs

    • James Tuite
    • Grahame Erskine
    • Nika Salia

    Original Paper Open access 20 February 2023 Article: 25

    

15. On Strict Brambles

    • Emmanouil Lardas
    • Evangelos Protopapas
    • Dimitris Zoros

    Original Paper 19 February 2023 Article: 24

    

16. Edge-Disjoint Steiner Trees and Connectors in Graphs

    • Hengzhe Li
    • Huayue Liu
    • Yaping Mao

    Original Paper 16 February 2023 Article: 23

17. Necessary and Sufficient Conditions for Circulant Digraphs to be Antistrong, Weakly-Antistrong and Anti-Eulerian

    • Lili Yuan
    • Jixiang Meng

    Original Paper 16 February 2023 Article: 22

    

18. Multicolor Ramsey Numbers of Bipartite Graphs and Large Books

    • Yan Li
    • Yusheng Li
    • Ye Wang

    Original Paper 11 February 2023 Article: 21

19. Coloring Squares of Planar Graphs with Maximum Degree at Most Five

    • Jianfeng Hou
    • Yindong Jin
    • Qian Zhao

    Original Paper 11 February 2023 Article: 20

    

20. Generalized Delannoy Matrices and Their Combinatorial Properties

    • Yanxin Liu
    • Yidong Sun
    • Di Zhao

    Original Paper 04 February 2023 Article: 19