Every 4-Equivalenced Association Scheme is Frobenius Bora Moon Original Paper 28 March 2020 Pages: 401 - 414
\({\mathrm{TS}}(v,\lambda )\) with Cyclic 2-Intersecting Gray Codes: \(v\equiv 0\) or \(4\pmod {12}\) John AsplundMelissa Keranen Original Paper 18 January 2020 Pages: 415 - 436
Partitioning Infinite Hypergraphs into Few Monochromatic Berge-Paths Sebastián BustamanteJan CorstenNóra Frankl Original Paper Open access 18 January 2020 Pages: 437 - 444
Several Extreme Coefficients of the Tutte Polynomial of Graphs Helin GongXian’an JinMengchen Li Original Paper 10 January 2020 Pages: 445 - 457
Forbidding Multiple Copies of Forestable Graphs Neal BushawNathan Kettle Original Paper 09 January 2020 Pages: 459 - 467
N-Flips in Triangulations with Two Odd Degree Vertices Yoshihiro AsayamaRyo MatsukawaAtsuhiro Nakamoto Original Paper 09 January 2020 Pages: 469 - 490
Degree Lists and Connectedness are 3-Reconstructible for Graphs with At Least Seven Vertices Alexandr V. KostochkaMina NahviDara Zirlin Original Paper 01 February 2020 Pages: 491 - 501
On the \(\mathrm{PSU}(4,2)\)-Invariant Vertex-Transitive Strongly Regular (216, 40, 4, 8) Graph Dean CrnkovićFrancesco PaveseAndrea Švob Original Paper 09 January 2020 Pages: 503 - 513
Some Multi-Color Ramsey Numbers on Stars versus Path, Cycle or Wheel Longqin Wang Original Paper 22 February 2020 Pages: 515 - 524
Spanning Properties of Theta–Theta-6 Mirela DamianJohn IaconoAndrew Winslow Original Paper 10 February 2020 Pages: 525 - 538
The Average Size of Matchings in Graphs Eric O. D. AndriantianaValisoa Razanajatovo MisanantenainaStephan Wagner Original Paper 08 February 2020 Pages: 539 - 560
Rhombus Tilings of an Even-Sided Polygon and Quadrangulations on the Projective Plane Hiroaki HamanakaAtsuhiro NakamotoYusuke Suzuki Original Paper 13 February 2020 Pages: 561 - 571
Extendability and Criticality in Matching Theory R. E. L. AldredMichael D. Plummer Original Paper 13 February 2020 Pages: 573 - 589
Containment: A Variation of Cops and Robber Danny CrytserNatasha KomarovJohn Mackey Original Paper 19 February 2020 Pages: 591 - 605
An Explicit Formula Enumerating the Finely Bounded Trees Using Young Tableaux Ayaka Ishikawa Original Paper 20 February 2020 Pages: 607 - 615
Tight Bounds for Illuminating and Covering of Orthotrees with Vertex Lights and Vertex Beacons I. Aldana-GalvánJ. L. Álvarez-RebollarC. Velarde Original Paper 20 February 2020 Pages: 617 - 630
Long Cycles Passing Through a Linear Forest Feifei SongShunzhe Zhang Original Paper 19 February 2020 Pages: 639 - 664
A Note on Singular Edges and Hamiltonicity in Claw-Free Graphs with Locally Disconnected Vertices Zdeněk RyjáčekPetr VránaLiming Xiong Original Paper 26 February 2020 Pages: 665 - 677
A Simple Characterization of Proportionally 2-choosable Graphs Hemanshu KaulJeffrey A. MudrockBenjamin Reiniger Original Paper 15 February 2020 Pages: 679 - 687
Trees with Unique Minimum Semitotal Dominating Sets Teresa W. HaynesMichael A. Henning Original Paper 14 February 2020 Pages: 689 - 702
The Minimum Number of Edges in 4-Critical Digraphs of Given Order Alexandr V. KostochkaMichael Stiebitz Original Paper 15 February 2020 Pages: 703 - 718
The Chromatic Number of Graphs with No Induced Subdivision of \(K_4\) Guantao ChenYuan ChenQinghai Liu Original Paper 27 February 2020 Pages: 719 - 728
Almost-Equidistant Sets Martin BalkoAttila PórPavel Valtr Original Paper Open access 29 February 2020 Pages: 729 - 754
Extremal Graphs for Odd-Ballooning of Paths and Cycles Hui ZhuLiying KangErfang Shan Original Paper 09 March 2020 Pages: 755 - 766
Partially Broken Orientations of Eulerian Plane Graphs Gen KawataniYusuke Suzuki Original Paper 27 March 2020 Pages: 767 - 777
Packing Tree Degree Sequences Aravind GollakotaWill HardtIstván Miklós Original Paper Open access 20 March 2020 Pages: 779 - 801
Optimal Pebbling Number of the Square Grid Ervin GyőriGyula Y. KatonaLászló F. Papp Original Paper Open access 24 March 2020 Pages: 803 - 829
2-Edge-Colored Chromatic Number of Grids is at Most 9 Janusz Dybizbański Original Paper Open access 11 March 2020 Pages: 831 - 837
Exact Values of Multicolor Ramsey Numbers \(R_l(C_{\le l+1})\) Weiguo ZhuYongqi SunHanshuo Zhang Original Paper 19 March 2020 Pages: 839 - 852
On Restricted Colorings of \(\text{(d,s)}\)-Edge Colorable Graphs Lan Anh Pham Original Paper Open access 17 March 2020 Pages: 853 - 864
Hadwiger Numbers of Self-complementary Graphs Andrei PavelescuElena Pavelescu Original Paper 21 March 2020 Pages: 865 - 876
Maximum Modulus of Independence Roots of Graphs and Trees Jason I. BrownBen Cameron Original Paper 17 March 2020 Pages: 877 - 894
On the Connectivity and Independence Number of Power Graphs of Groups Peter J. CameronSayyed Heidar Jafari Original Paper Open access 31 March 2020 Pages: 895 - 904
Rectilinear Crossings in Complete Balanced d-Partite d-Uniform Hypergraphs Rahul GangopadhyaySaswata Shannigrahi Original Paper 03 April 2020 Pages: 905 - 911