Volume 6 (2021) – A Special Volume on the Occasion of the 100th Anniversary of  Frank Harary’s Birth 

 

 

Guest Editors: Gary Chartrand, Teresa Haynes, Stephen Hedetniemi, and Ping Zhang.
Note: Although all the articles of this special volume were ready for publication well before 11 March 2021, they all together were published on 11 March 2021; the date that would have been the 100th birthday of Frank Harary.

Remembering Frank Harary
Gary Chartrand, Teresa W. Haynes, Stephen T. Hedetniemi, Ping Zhang
Editorial   |   Pages: 1-7   |   DOI: 10.47443/dml.2021.s101

Productive and Sum Graph Labelings: A Survey
Lowell W. Beineke, Suresh M. Hegde, V. Vilfred Kamalappan
Review Article   |   Pages: 8-18   |   DOI: 10.47443/dml.2021.s102

Vertex Sequences in Graphs
Teresa W. Haynes, Stephen T. Hedetniemi
Review Article   |   Pages: 19-31   |   DOI: 10.47443/dml.2021.s103

Decomposition of $4k$-Regular Graphs into $k$   $4$-Regular $K_5$-Free and ($K_5-e$)-Free Subgraphs
Rachel Johnson, David Mendel, Samantha Norris, Michael J. Plantholt, Shailesh K. Tipnis
Research Article   |   Pages: 32-37   |   DOI: 10.47443/dml.2021.s104

A Brief History of Edge-Colorings — with Personal Reminiscences
Bjarne Toft, Robin Wilson
Review Article   |   Pages: 38-46   |   DOI: 10.47443/dml.2021.s105

Generalized Target Functions on Trees
Fred R. McMorris, Henry M. Mulder, Robert C. Powers
Research Article   |   Pages: 47-53   |   DOI: 10.47443/dml.2021.s106

On $4$-Colorable Robust Critical Graphs
Mark Anderson, Robert Brigham, Ronald D. Dutton, Richard Vitray, Jay Yellen
Research Article   |   Pages: 54-59   |   DOI: 10.47443/dml.2021.s107

Plane Integral Drawings of the Platonic Solid Graphs with Triangle Faces
Alewyn P. Burger, Heiko Harborth, Meinhard Möller
Research Article   |   Pages: 60-67   |   DOI: 10.47443/dml.2021.s108

A Survey of Line Digraphs and Generalizations
Jay S. Bagga, Lowell W. Beineke
Review Article   |   Pages: 68-83   |   DOI: 10.47443/dml.2021.s109

New Directions in Ramsey Theory
Gary Chartrand, Ping Zhang
Review Article   |   Pages: 84-96   |   DOI: 10.47443/dml.2021.s110