On Convex Developments of a Doubly-Covered Square -- Flat 2-Foldings of Convex Polygons -- Uniform Coverings of 2-Paths with 6-Paths in the Complete Graph -- Foldings of Regular Polygons to Convex Polyhedra I: Equilateral Triangles -- Maximum Induced Matchings of Random Regular Graphs -- Antimagic Valuations for the Special Class of Plane Graphs -- A General Framework for Coloring Problems: Old…