Vol. 15 No. 2 (2020)

Articles

• Triple product sums of Catalan triangle numbers

  Wenchang Chu

  1-17

  • PDF

• $Q_4$-Factorization of $\lambda K_n$ and $\lambda K_x(m)$

  Oğuz Doğan

  18-26

  • PDF

• Diameter 3

  Miodrag Sokic

  27-41

  • PDF

• Hyperball packings related to truncated cube and octahedron tilings in hyperbolic space

  Jenő Szirmai

  42-59

  • PDF

• On irreversible spread of influence in edge-weighted graphs

  Manouchehr Zaker

  60-72

  • PDF

• A subspace based subspace inclusion graph on vector space

  Mohammad Ashraf, Mohit Kumar, Ghulam Mohammad

  73-83

  • PDF

• The 2-tuple dominating independent number of a random graph

  Bin Wang, Tao Zhang

  84-94

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• A new mathematical model for tiling finite regions of the plane with polyominoes

  Marcus Garvie, John Burkardt

  95-131

  • PDF

• Minimum size blocking sets of certain line sets with respect to an elliptic quadric in $PG(3,q)$

  Bart De Bruyn, Puspendu Pradhan, Binod Kumar Sahoo

  132-147

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• A method to determine algebraically integral Cayley digraphs on finite abelian group

  Fei Li

  148-152

  • PDF

• Further generalizations of the parallelogram law

  Antonio M. Oller-Marcén

  153-158

  • PDF

• Equality Perfect Graphs and Digraphs

  Stephan Dominique Andres

  159-178

  • PDF