
Edge-counting vectors of subgraphs of Cartensian products are introduced as the counting vectors of the edges that project onto the factors. For several standard constructions their edge-counting vectors are computed. It is proved that the edge-counting vectors of Fibonacci cubes are the rows of the Fibonacci triangle, and the edge-counting vectors of Lucas cubes are \(F_{n-1}\)-constant vectors.
edge counting vector, Cartesian product of graphs, Fibonacci triangle, Fibonacci cubes, Lucas cubes, Fibonacci and Lucas numbers and polynomials and generalizations, Structural characterization of families of graphs, Enumeration in graph theory, partial cubes
edge counting vector, Cartesian product of graphs, Fibonacci triangle, Fibonacci cubes, Lucas cubes, Fibonacci and Lucas numbers and polynomials and generalizations, Structural characterization of families of graphs, Enumeration in graph theory, partial cubes
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