1. The Eulerian Distribution on the Involutions of the Hyperoctahedral Group is Indeed \(\gamma\)-Positive

   • Jie Cao
   • Lily Li Liu

   Original Paper 17 May 2021 Pages: 1943 - 1951

2. Distributions of Near-4-Regular Maps on the Sphere and the Projective Plane

   • Shude Long
   • Han Ren

   Original Paper 08 June 2021 Pages: 1953 - 1963

3. The Action of the Weyl Group on the \(E_8\) Root System

   • Rosa Winter
   • Ronald van Luijk

   Original Paper Open access 07 July 2021 Pages: 1965 - 2064

   

4. Some Bounds for the Incidence Q-Spectral Radius of Uniform Hypergraphs

   • Junpeng Zhou
   • Zhongxun Zhu
   • Yu Yang

   Original Paper 21 May 2021 Pages: 2065 - 2077

5. Spectral Threshold for Extremal Cyclic Edge-Connectivity

   • Sinan G. Aksoy
   • Mark Kempton
   • Stephen J. Young

   Original Paper 15 June 2021 Pages: 2079 - 2093

   

6. Partitions of Multigraphs Without \(C_4\)

   • Jialei Song
   • Baogang Xu

   Original Paper 04 June 2021 Pages: 2095 - 2111

   

7. Star-Critical Ramsey Numbers of Generalized Fans

   • Yan Li
   • Yusheng Li
   • Ye Wang

   Original Paper 28 May 2021 Pages: 2113 - 2120

8. Generalized List Colouring of Graphs

   • Eun-Kyung Cho
   • Ilkyoo Choi
   • Xuding Zhu

   Original Paper 30 May 2021 Pages: 2121 - 2127

9. Cycle Spectra of Contraction-Critically 4-Connected Planar Graphs

   • On-Hei Solomon Lo
   • Jens M. Schmidt

   Original Paper 29 June 2021 Pages: 2129 - 2137

10. Extremal Edge-Girth-Regular Graphs

    • Ajda Zavrtanik Drglin
    • Slobodan Filipovski
    • Tom Raiman

    Original Paper 13 July 2021 Pages: 2139 - 2154

    

11. On the Turán Number of Theta Graphs

    • Mingqing Zhai
    • Longfei Fang
    • Jinlong Shu

    Original Paper 30 May 2021 Pages: 2155 - 2165

    

12. Star-Critical Ramsey Numbers of Cycles Versus Wheels

    • Yuchen Liu
    • Yaojun Chen

    Original Paper 31 May 2021 Pages: 2167 - 2172

13. Independent Sets in (\(P_4+P_4\),Triangle)-Free Graphs

    • Raffaele Mosca

    Original Paper Open access 02 June 2021 Pages: 2173 - 2189

14. Reconfiguring Dominating Sets in Minor-Closed Graph Classes

    • Dieter Rautenbach
    • Johannes Redl

    Original Paper Open access 02 June 2021 Pages: 2191 - 2205

    

15. Conformal Decomposition of Integral Flows on Signed Graphs with Outer-Edges

    • Beifang Chen

    Original Paper 17 June 2021 Pages: 2207 - 2225

    

16. Group Colorings and DP-Colorings of Multigraphs Using Edge-Disjoint Decompositions

    • Hong-Jian Lai
    • Lucian Mazza

    Original Paper 04 June 2021 Pages: 2227 - 2243

    

17. Factorisation of Greedoid Polynomials of Rooted Digraphs

    • Kai Siong Yow
    • Kerri Morgan
    • Graham Farr

    Original Paper 21 June 2021 Pages: 2245 - 2264

    

18. A Cheeger Cut for Uniform Hypergraphs

    • Raffaella Mulas

    Original Paper Open access 05 June 2021 Pages: 2265 - 2286

    

19. On the Maximal Colorings of Complete Graphs Without Some Small Properly Colored Subgraphs

    • Chunqiu Fang
    • Ervin Győri
    • Jimeng Xiao

    Original Paper Open access 15 June 2021 Pages: 2287 - 2304

    

20. A Sufficient Condition for an IC-Planar Graph to be Class 1

    • Yuanyuan Duan
    • Wenyao Song

    Original Paper 15 June 2021 Pages: 2305 - 2313

21. Size Ramsey Results for the Path of Order Three

    • Roland Lortz
    • Ingrid Mengersen

    Original Paper 27 October 2021 Pages: 2315 - 2331

    

22. Difference Sets Disjoint from a Subgroup II: Groups of Order \(4p^2\)

    • Stephen P. Humphries
    • Nathan L. Nicholson

    Original Paper 26 June 2021 Pages: 2333 - 2349

23. A Note on the Crossing Number of the Cone of a Graph

    • Zongpeng Ding
    • Yuanqiu Huang

    Original Paper 26 June 2021 Pages: 2351 - 2363

    

24. The Hitting Times of Random Walks on Bicyclic Graphs

    • Xiaomin Zhu
    • Xiao-Dong Zhang

    Original Paper 04 July 2021 Pages: 2365 - 2386

    

25. Hamiltonicity of a Coprime Graph

    • M. H. Bani Mostafa A.
    • Ebrahim Ghorbani

    Original Paper 12 July 2021 Pages: 2387 - 2395

26. On WL-Rank and WL-Dimension of Some Deza Circulant Graphs

    • Ravil Bildanov
    • Viktor Panshin
    • Grigory Ryabov

    Original Paper 01 July 2021 Pages: 2397 - 2421

27. Sharp Bounds on the Permanental Sum of a Graph

    • Wasin So
    • Tingzeng Wu
    • Huazhong Lü

    Original Paper 06 July 2021 Pages: 2423 - 2437

    

28. Ambush Cops and Robbers

    • Nancy E. Clarke
    • Melissa Creighton
    • Asiyeh Sanaei

    Original Paper 28 October 2021 Pages: 2439 - 2457

    

29. Characterizing Bipartite Graphs Which Admit a k-NU Polymorphism via Absolute Retracts

    • Adam Jaffe

    Original Paper 13 July 2021 Pages: 2459 - 2466

30. Sufficient Spectral Radius Conditions for Hamilton-Connectivity of k-Connected Graphs

    • Qiannan Zhou
    • Hajo Broersma
    • Yong Lu

    Original Paper Open access 16 July 2021 Pages: 2467 - 2485

    

31. On the Number of Linear Multipartite Hypergraphs with Given Size

    • Fang Tian

    Original Paper 18 July 2021 Pages: 2487 - 2496

32. Erdős-Ko-Rado Theorem for Matrices Over Residue Class Rings

    • Jun Guo

    Original Paper 16 July 2021 Pages: 2497 - 2510

33. The Antistrong Property for Special Digraph Families

    • Lili Yuan
    • Jixiang Meng
    • Eminjan Sabir

    Original Paper 23 July 2021 Pages: 2511 - 2519

    

34. On Tree-Connectivity and Path-Connectivity of Graphs

    • Shasha Li
    • Zhongmei Qin
    • Jun Yue

    Original Paper 24 July 2021 Pages: 2521 - 2533

35. 3-Free Strong Digraphs with the Maximum Size

    • Bin Chen
    • An Chang

    Original Paper 25 July 2021 Pages: 2535 - 2554

    

36. Triangle-Free Subgraphs of Hypergraphs

    • Jiaxi Nie
    • Sam Spiro
    • Jacques Verstraëte

    Original Paper 28 July 2021 Pages: 2555 - 2570

37. A Note on Stability for Maximal F-Free Graphs

    • Dániel Gerbner

    Original Paper Open access 19 September 2021 Pages: 2571 - 2580

38. Strong Cliques in Claw-Free Graphs

    • Michał Dębski
    • Małgorzata Śleszyńska-Nowak

    Original Paper Open access 23 July 2021 Pages: 2581 - 2593

    

39. Counterexamples to Thomassen’s Conjecture on Decomposition of Cubic Graphs

    • Thomas Bellitto
    • Tereza Klimošová
    • Yelena Yuditsky

    Original Paper 24 July 2021 Pages: 2595 - 2599

    

40. On Supereulerian 2-Edge-Coloured Graphs

    • Jørgen Bang-Jensen
    • Thomas Bellitto
    • Anders Yeo

    Original Paper 13 August 2021 Pages: 2601 - 2620

    

41. Acyclic Edge Coloring of Chordal Graphs with Bounded Degree

    • Yulai Ma
    • Yongtang Shi
    • Weifan Wang

    Original Paper 23 July 2021 Pages: 2621 - 2636

    

42. The Inductive Graph Dimension from the Minimum Edge Clique Cover

    • Kassahun Betre
    • Evatt Salinger

    Original Paper 23 July 2021 Pages: 2637 - 2654

    

43. On the Number of Forests and Connected Spanning Subgraphs

    • Márton Borbényi
    • Péter Csikvári
    • Haoran Luo

    Original Paper Open access 30 July 2021 Pages: 2655 - 2678

    

44. Domination and Outer Connected Domination in Maximal Outerplanar Graphs

    • Wei Zhuang

    Original Paper 28 July 2021 Pages: 2679 - 2696

    

45. Bounding the Number of Non-duplicates of the q-Side in Simple Drawings of \(K_{p,q}\)

    • R. Bruce Richter
    • André C. Silva
    • Orlando Lee

    Original Paper 22 August 2021 Pages: 2697 - 2701

46. Bipartite Ramsey Numbers of Cycles for Random Graphs

    • Meng Liu
    • Yusheng Li

    Original Paper 25 July 2021 Pages: 2703 - 2711

47. Upper Bounds on Inclusive Distance Vertex Irregularity Strength

    • Sylwia Cichacz
    • Agnieszka Görlich
    • Andrea Semaničová-Feňovčíková

    Original Paper 28 July 2021 Pages: 2713 - 2721

    

48. The Chromatic Number of Joins of Signed Graphs

    • Amelia R. W. Mattern

    Original Paper 23 September 2021 Pages: 2723 - 2735

    

49. Prime 3-Uniform Hypergraphs

    • Abderrahim Boussaïri
    • Brahim Chergui
    • Mohamed Zaidi

    Original Paper 23 August 2021 Pages: 2737 - 2760

    

50. Improved Bounds for Burning Fence Graphs

    • Anthony Bonato
    • Sean English
    • Daniel Moghbel

    Original Paper 06 August 2021 Pages: 2761 - 2773