On complexity of mutlidistance graph recognition in R^1
Let A be a set of positive numbers. A graph G is called an A-embeddable graph in R^d if the vertices of G can be positioned in R^d so that the distance between endpoints of any edge is an element of A. We consider the computational problem of recognizing A-embeddable graphs in R^1 and classify all finite sets A by complexity of this problem in several natural variations.
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