A pair of mathematicians solved a legendary question about the proportion of vertices in a graph with an odd number of connections. “It’s a bit of a surprise, at least for me, that such a combination ...

The incidence matrices of various graphs are considered. By reordering the points, the bandwidth can be changed. In the cases of rectangular grids in the plane or cubic grids in three dimensions, the ...

This is a preview. Log in through your library . Abstract Sierpiński graphs $S_p^n$ form an extensively studied family of graphs of fractal nature applicable in ...