1. Sharp Upper Bounds on the k-Independence Number in Graphs with Given Minimum and Maximum Degree

   • Suil O
   • Yongtang Shi
   • Zhenyu Taoqiu

   Original Paper 11 November 2020 Pages: 393 - 408

   

2. Anti-Ramsey Problems in Complete Bipartite Graphs for t Edge-Disjoint Rainbow Spanning Trees

   • Yuxing Jia
   • Mei Lu
   • Yi Zhang

   Original Paper 12 November 2020 Pages: 409 - 433

3. Embeddings of a Graph into a Surface with Different Weak Chromatic Numbers

   • Kengo Enami
   • Kenta Noguchi

   Original Paper 16 November 2020 Pages: 435 - 444

   

4. Equitable Clique-Coloring in Claw-Free Graphs with Maximum Degree at Most 4

   • Zuosong Liang
   • Yanxia Dong
   • Huiyu Xing

   Original Paper 09 November 2020 Pages: 445 - 454

   

5. Acyclic Coloring of Graphs with Maximum Degree 7

   • Juan Wang
   • Lianying Miao
   • Yunlong Liu

   Original Paper 11 November 2020 Pages: 455 - 469

6. Fractional Cross Intersecting Families

   • Rogers Mathew
   • Ritabrata Ray
   • Shashank Srivastava

   Original Paper 20 November 2020 Pages: 471 - 484

7. Spherical 2-Designs as Stationary Points of Many-Body Systems

   • Makoto Miura
   • Kazushi Ueda

   Original Paper 24 November 2020 Pages: 485 - 492

8. Measuring Similarity Between Connected Graphs: The Role of Induced Subgraphs and Complementarity Eigenvalues

   • Alberto Seeger
   • David Sossa

   Original Paper 02 January 2021 Pages: 493 - 525

   

9. A Size Condition for Diameter Two Orientable Graphs

   • Garner Cochran
   • Éva Czabarka
   • László Székely

   Original Paper 03 January 2021 Pages: 527 - 544

   

10. On Generalisations of the AVD Conjecture to Digraphs

    • Julien Bensmail
    • Fionn Mc Inerney

    Original Paper 20 January 2021 Pages: 545 - 558

11. Fractional Matchings, Component-Factors and Edge-Chromatic Critical Graphs

    • Antje Klopp
    • Eckhard Steffen

    Original Paper Open access 04 January 2021 Pages: 559 - 580

    

12. Wiener Indices of Maximal k-Degenerate Graphs

    • Allan Bickle
    • Zhongyuan Che

    Original Paper 09 January 2021 Pages: 581 - 589

    

13. On the Connectivity of Enhanced Power Graphs of Finite Groups

    • Sudip Bera
    • Hiranya Kishore Dey
    • Sajal Kumar Mukherjee

    Original Paper 03 January 2021 Pages: 591 - 603

14. On Grundy and b-Chromatic Number of Some Families of Graphs: A Comparative Study

    • Zoya Masih
    • Manouchehr Zaker

    Original Paper 01 January 2021 Pages: 605 - 620

    

15. Art Gallery Problem with Rook and Queen Vision

    • Hannah Alpert
    • Érika Roldán

    Original Paper Open access 21 January 2021 Pages: 621 - 642

    

16. The Signature of Chordal Graphs and Cographs

    • Changxiang He
    • Shujuan Qian
    • Baofeng Wu

    Original Paper 21 January 2021 Pages: 643 - 650