  Place value numbers, such as the binary or decimal numbers can be represented
by the end vertices (leaf or pendant vertices) of rooted symmetrical trees.
Numbers that consist of at most a fixed number of digits are represented by
vertices that are equidistant from the root vertex and the corresponding number
representations do not depend on the distance from the root vertex. In this
paper, we introduce number systems that are representable by all vertices of a
rooted symmetric tree in such a way that the number representation of each
vertex depends on its distance from the root vertex.
