1. Correction to: Note on Forcing Problem of Trees

   • Mengya He
   • Shengjin Ji

   Publisher Correction 24 January 2022 Article: 26

2. Group-Annihilator Graphs Realised by Finite Abelian Groups and Its Properties

   • Eshita Mazumdar
   • Rameez Raja

   Original Paper 23 December 2021 Article: 25

   

3. The Family of Bicircular Matroids Closed Under Duality

   • Vaidy Sivaraman
   • Daniel Slilaty

   Original Paper 23 December 2021 Article: 24

   

4. Proportional 2-Choosability with a Bounded Palette

   • Jeffrey A. Mudrock
   • Robert Piechota
   • Tim Wagstrom

   Original Paper 22 December 2021 Article: 23

5. Monotonic Normalized Heat Diffusion for Regular Bipartite Graphs with Four Eigenvalues

   • Tasuku Kubo
   • Ryuya Namba

   Original Paper 22 December 2021 Article: 22

   

6. Super Domination in Trees

   • Wei Zhuang

   Original Paper 22 December 2021 Article: 21

   

7. The Ramsey Number of 3-Uniform Loose Path Versus Star

   • Fangfang Zhang
   • Yaojun Chen

   Original Paper 21 December 2021 Article: 20

   

8. The Sharp Upper Bounds on the \(A_{\alpha }\)-Spectral Radius of \(C_4\)-Free Graphs and Halin Graphs

   • Shu-Guang Guo
   • Rong Zhang

   Original Paper 15 December 2021 Article: 19

   

9. On (\(1,C_4\)) One-Factorization and Two Orthogonal (\(2,C_4\)) One-Factorizations of Complete Graphs

   • Adrián Vázquez-Ávila

   Original Paper 14 December 2021 Article: 18

10. New Constructions of Divisible Design Cayley Graphs

    • Dean Crnković
    • Andrea Švob

    Original Paper 15 December 2021 Article: 17

11. Balanced Polychromatic 2-Coloring of Triangulations

    • Yoshihiro Asayama
    • Naoki Matsumoto

    Original Paper 16 December 2021 Article: 16

    

12. Some Constructions of Quasi-strongly Regular Digraphs

    • Zhengyu Guo
    • Dongdong Jia
    • Gengsheng Zhang

    Original Paper 18 December 2021 Article: 15

    

13. Mean Color Numbers of Some Graphs

    • Shude Long
    • Han Ren

    Original Paper 16 December 2021 Article: 14

14. A Note on Dominating Pair Degree Condition for Hamiltonian Cycles in Balanced Bipartite Digraphs

    • Ruixia Wang

    Original Paper 15 December 2021 Article: 13

15. On the Number of Heterochromatic Trees in Nice and Beautiful Colorings of Complete Graphs

    • Juan José Montellano-Ballesteros
    • Eduardo Rivera-Campo
    • Ricardo Strausz

    Original Paper 16 December 2021 Article: 12

    

16. Hypergraph Based Berge Hypergraphs

    • Martin Balko
    • Dániel Gerbner
    • Cory Palmer

    Original Paper 18 December 2021 Article: 11

17. A Bijection for the Boolean Numbers of Ferrers Graphs

    • Beáta Bényi

    Original Paper Open access 16 December 2021 Article: 10

    

18. Degree Condition for a Digraph to be Supereulerian

    • Mansour J. Algefari

    Original Paper 17 December 2021 Article: 9

    

19. Planar Graphs Without Cycles of Length from 4 to 7 and Intersecting Triangles are DP-3-Colorable

    • Jian-Bo Lv

    Original Paper 15 December 2021 Article: 8

    

20. Diameter of Io-Decomposable Riordan Graphs of the Bell Type

    • Ji-Hwan Jung

    Original Paper 15 December 2021 Article: 7

    

21. Admissible Property of Graphs in Terms of Radius

    • Huijuan Yu
    • Baoyindureng Wu

    Original Paper 15 December 2021 Article: 6

    

22. Ramsey Numbers of 5-Uniform Loose Cycles

    • Maryam Shahsiah

    Original Paper 20 December 2021 Article: 5

23. Facial Visibility in Edge Colored Plane Graphs

    • Július Czap
    • Stanislav Jendrol’
    • Tomáš Madaras

    Original Paper 19 December 2021 Article: 4

    

24. Note on Forcing Problem of Trees

    • Mengya He
    • Shengjin Ji

    Original Paper 15 December 2021 Article: 3

25. Decomposition and Merging Algorithms for Noncrossing Forests

    • Sabrina X. M. Pang
    • Lun Lv
    • Xiaoming Deng

    Original Paper 17 December 2021 Article: 2

    

26. On the Proper Arc Labeling of Directed Graphs

    • Ali Dehghan
    • Arash Ahadi

    Original Paper 15 December 2021 Article: 1