1. In Memoriam Professor Robin Thomas (1962—2020)

   Obituary 30 August 2020 Pages: 1269 - 1271

   

2. On q-Series and Split Lattice Paths

   • Megha Goyal

   Original Paper 13 August 2020 Pages: 1273 - 1295

   

3. Chromatic Number, Induced Cycles, and Non-separating Cycles

   • Hanbaek Lyu

   Original Paper 27 May 2020 Pages: 1297 - 1310

   

4. Burning the Plane

   • Anthony Bonato
   • Karen Gunderson
   • Amy Shaw

   Original Paper 22 May 2020 Pages: 1311 - 1335

   

5. Affirmative Solutions on Local Antimagic Chromatic Number

   • Gee-Choon Lau
   • Ho-Kuen Ng
   • Wai-Chee Shiu

   Original Paper 16 June 2020 Pages: 1337 - 1354

   

6. On Vertex-Disjoint Triangles in Tripartite Graphs and Multigraphs

   • Qingsong Zou
   • Jiawang Li
   • Zizheng Ji

   Original Paper 06 June 2020 Pages: 1355 - 1361

   

7. Unified Spectral Hamiltonian Results of Balanced Bipartite Graphs and Complementary Graphs

   • Muhuo Liu
   • Yang Wu
   • Hong-Jian Lai

   Original Paper 28 June 2020 Pages: 1363 - 1390

   

8. On Specific Factors in Graphs

   • Csilla Bujtás
   • Stanislav Jendrol’
   • Zsolt Tuza

   Original Paper Open access 25 August 2020 Pages: 1391 - 1399

9. Properties of a q-Analogue of Zero Forcing

   • Steve Butler
   • Craig Erickson
   • Boting Yang

   Original Paper 13 July 2020 Pages: 1401 - 1419

   

10. Correction to: Properties of a q-Analogue of Zero Forcing

    • Steve Butler
    • Craig Erickson
    • Boting Yang

    Correction 24 August 2020 Pages: 1421 - 1422

11. Signed Circuit Cover of Bridgeless Signed Graphs

    • Mengmeng Xie
    • Chuixiang Zhou

    Original Paper 27 August 2020 Pages: 1423 - 1443

    

12. Forbidden Subgraphs for a Graph to Have a Hamiltonian Path Square

    • Xiaojing Yang
    • Liming Xiong

    Original Paper 05 June 2020 Pages: 1445 - 1456

    

13. Shortest Directed Networks in the Plane

    • Alastair Maxwell
    • Konrad J. Swanepoel

    Original Paper Open access 12 June 2020 Pages: 1457 - 1475

    

14. Optimal Domination Polynomials

    • Iain Beaton
    • Jason I. Brown
    • Danielle Cox

    Original Paper 12 June 2020 Pages: 1477 - 1487

15. A Relation Between Schröder Paths and Motzkin Paths

    • Lin Yang
    • Sheng-Liang Yang

    Original Paper 24 May 2020 Pages: 1489 - 1502

    

16. Maximum Cuts in \(\mathscr {H}\)-Free Graphs

    • Huawen Ma

    Original Paper 23 May 2020 Pages: 1503 - 1516

17. On Cycles that Alternate Through Selected Sets of Vertices

    • Colton Magnant
    • Yaping Mao

    Original Paper 30 May 2020 Pages: 1517 - 1523

18. On existence of Two Classes of Generalized Howell Designs with Block Size Three and Index Two

    • Jing Shi
    • Jinhua Wang

    Original Paper 05 June 2020 Pages: 1525 - 1543

19. Neighbor Sum Distinguishing Total Choosability of Cubic Graphs

    • Donghan Zhang
    • You Lu
    • Shenggui Zhang

    Original Paper 02 June 2020 Pages: 1545 - 1562

    

20. An Infinite Family of Sum-Paint Critical Graphs

    • Thomas Mahoney
    • Chad Wiley

    Original Paper 01 August 2020 Pages: 1563 - 1571

    

21. On Mixed Graphs Whose Hermitian Spectral Radii are at Most 2

    • Bo-Jun Yuan
    • Yi Wang
    • Yun Qiao

    Original Paper 19 May 2020 Pages: 1573 - 1584

    

22. Reducing Vizing’s 2-Factor Conjecture to Meredith Extension of Critical Graphs

    • Xiaodong Chen
    • Qing Ji
    • Mingda Liu

    Original Paper 27 May 2020 Pages: 1585 - 1591

    

23. Laplacian Controllability for Graphs Obtained by Some Standard Products

    • Milica Anđelić
    • Maurizio Brunetti
    • Zoran Stanić

    Original Paper 08 August 2020 Pages: 1593 - 1602