1. Recent Progress on Graphs with Fixed Smallest Adjacency Eigenvalue: A Survey

   • Jack H. Koolen
   • Meng-Yue Cao
   • Qianqian Yang

   Original Paper 06 May 2021 Pages: 1139 - 1178

   

2. Graphs of Order n with Determining Number \(n{-}3\)

   • Dein Wong
   • Yuanshuai Zhang
   • Zhijun Wang

   Original Paper 16 April 2021 Pages: 1179 - 1189

   

3. Decomposition of Complete Graphs into Arbitrary Trees

   • G. Sethuraman
   • V. Murugan

   Original Paper 01 May 2021 Pages: 1191 - 1203

   

4. Admissible Pinnacle Orderings

   • Irena Rusu
   • Bridget Eileen Tenner

   Original Paper 08 April 2021 Pages: 1205 - 1214

   

5. On a Conjecture for Power Domination

   • Min Zhao
   • Erfang Shan
   • Liying Kang

   Original Paper 05 May 2021 Pages: 1215 - 1228

6. A Principle for Converting Lindström-Type Lemmas to Stembridge-Type Theorems, with Applications to Walks, Groves, and Alternating Flows

   • Owen Biesel

   Original Paper 07 April 2021 Pages: 1229 - 1246

   

7. On Polyhedral Realization with Isosceles Triangles

   • David Eppstein

   Original Paper Open access 11 April 2021 Pages: 1247 - 1269

   

8. Rainbow Triangles in Arc-Colored Tournaments

   • Wei Li
   • Shenggui Zhang
   • Ruonan Li

   Original Paper 14 May 2021 Pages: 1271 - 1290

9. Decompositions of Some Classes of Dense Graphs into Cycles of Lengths 4 and 8

   • S. Ganesamurthy
   • P. Paulraja

   Original Paper 15 April 2021 Pages: 1291 - 1310

   

10. Partitioning a Graph into Complementary Subgraphs

    • Julliano R. Nascimento
    • Uéverton S. Souza
    • Jayme L. Szwarcfiter

    Original Paper 04 May 2021 Pages: 1311 - 1331

    

11. The Maximal 1-Planarity and Crossing Numbers of Graphs

    • Zhangdong Ouyang
    • Yuanqiu Huang
    • Fengming Dong

    Original Paper 20 April 2021 Pages: 1333 - 1344

    

12. Commuting Involution Graphs for Certain Exceptional Groups of Lie Type

    • Ali Aubad
    • Peter Rowley

    Original Paper Open access 16 May 2021 Pages: 1345 - 1355

13. Number of Dominating Sets in Cylindric Square Grid Graphs

    • Seungsang Oh

    Original Paper 28 April 2021 Pages: 1357 - 1372

    

14. Extremal Digraphs Avoiding an Orientation of the Diamond

    • Zhenhua Lyu

    Original Paper 11 May 2021 Pages: 1373 - 1383

    

15. Maximum Spanning Trees in Normed Planes

    • Javier Alonso
    • Pedro Martín

    Original Paper 12 May 2021 Pages: 1385 - 1403

    

16. Egalitarian Edge Orderings of Complete Graphs

    • Charles J. Colbourn

    Original Paper 30 April 2021 Pages: 1405 - 1413

    

17. Minimum Size Highly Redundantly Rigid Graphs in the Plane

    • Tibor Jordán

    Original Paper Open access 13 May 2021 Pages: 1415 - 1431

    

18. Exponential Lower Bound for Berge-Ramsey Problems

    • Dömötör Pálvölgyi

    Original Paper Open access 14 May 2021 Pages: 1433 - 1435

19. Generalized Turán Number of Even Linear Forests

    • Xiutao Zhu
    • Fangfang Zhang
    • Yaojun Chen

    Original Paper 12 May 2021 Pages: 1437 - 1449

    

20. On Explicit Random-Like Tournaments

    • Shohei Satake

    Original Paper 07 May 2021 Pages: 1451 - 1463