Sum and Difference Sets in Generalized Dihedral Groups.- Geodetic Ratio, Color Sequences, and Their Relation on Graphs.- Equitable (, )-edge-colorings of .- On Maximum Packings of the -Fold Complete 3-Uniform Hypergraph with Loose 4-Paths.- On Loose 5-Cycle Decompositions, Packings, and Coverings of -Fold Complete 3-Uniform Hypergraphs.- Sequencings in Semidirect Products via the Polynomial Method.- Type (, , ) face-magic labelings of calendula graphs.- Double-Change Covering Designs with block size = 2 or 3.

- A Vertical Recurrence Relation Approach to Riordan Arrays, the Quasi-Riordan group, and the Extended Riordan Subgroups.- Finiteness theorem for commutative rings with finite hyper-graph.- Modularity and Heavy-Tailed Degree Distributions.