Radial path

Radial path --- радиальный путь.

A radial path in a graph [math]\displaystyle{ G }[/math] is a path of length [math]\displaystyle{ r(G) }[/math], where [math]\displaystyle{ r(G) }[/math] is the radius of [math]\displaystyle{ G }[/math] that joins a central vertex to one of its eccentric vertices.