Tiling Rectangles with Gaps by Ribbon Right Trominoes
Premalatha Junius, Viorel Nitica

Open J. Discrete Math. Vol.7 No.2, April 30, 2017
DOI:10.4236/ojdm.2017.72010

The Spread of Infectious Disease on Network Using Neutrosophic Algebraic Structure
A. Zubairu, A. A. Ibrahim

Open J. Discrete Math. Vol.7 No.2, April 24, 2017
DOI:10.4236/ojdm.2017.72009

Boundaries of Smooth Strictly Convex Sets in the Euclidean Plane R²
Horst Kramer

Open J. Discrete Math. Vol.7 No.2, April 19, 2017
DOI:10.4236/ojdm.2017.72008

Length of the Longest Path and Diameter in Orientations of Graphs
Bing Zhou

Open J. Discrete Math. Vol.7 No.2, April 19, 2017
DOI:10.4236/ojdm.2017.72007

Competition Numbers of Several Kinds of Triangulations of a Sphere
Yongqiang Zhao, Zhiming Fang, Yonggang Cui, Guoyan Ye, Zhijun Cao

Open J. Discrete Math. Vol.7 No.2, April 19, 2017
DOI:10.4236/ojdm.2017.72006