Titlebook: Discrete and Computational Geometry, Graphs, and Games; 21st Japanese Confer Jin Akiyama,Reginaldo M. Marcelo,Yushi Uno Conference proceedi

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FLIC

Surveilling and Securing the OlympicsA finite set of vectors . in the .-dimensional Euclidean space . is called a 2-distance set, if the set of mutual distances between distinct elements of . has cardinality exactly 2. In this note we report, among other things, the results of a computer-aided enumeration of the 2-distance sets in ..

In-Situ

Immacolata Di Napoli,Caterina ArcidiaconoIn this paper, global locating-dominating sets of the join and Cartesian product of graphs are characterized. Global location-domination numbers and bounds of these graphs and some special graphs are determined. The relationship between the location-domination numbers of the join of two graphs and its complement is also shown.

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https://doi.org/10.1007/978-1-4757-4305-0Kurotto and Juosan are Nikoli’s pencil puzzles. We study the computational complexity of Kurotto and Juosan puzzles. It is shown that deciding whether a given instance of each puzzle has a solution is NP-complete. Each of the two proofs uses a reduction from the PLANAR 3SAT problem.

合适

The Two-Distance Sets in Dimension Four,A finite set of vectors . in the .-dimensional Euclidean space . is called a 2-distance set, if the set of mutual distances between distinct elements of . has cardinality exactly 2. In this note we report, among other things, the results of a computer-aided enumeration of the 2-distance sets in ..

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Global Location-Domination in the Join and Cartesian Product of Graphs,In this paper, global locating-dominating sets of the join and Cartesian product of graphs are characterized. Global location-domination numbers and bounds of these graphs and some special graphs are determined. The relationship between the location-domination numbers of the join of two graphs and its complement is also shown.

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,Packing Cube Nets into Rectangles with ,(1) Holes,We show that the 11 hexomino nets of the unit cube (using arbitrarily many copies of each) can pack disjointly into an . rectangle and cover all but a constant . number of unit squares, where . for . integers .. On the other hand, the nets of the dicube (two unit cubes) can be exactly packed into some rectangles.

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