{ "id": "1708.05919", "version": "v1", "published": "2017-08-20T01:41:17.000Z", "updated": "2017-08-20T01:41:17.000Z", "title": "Rigidity, graphs and Hausdorff dimension", "authors": [ "N. Chatzikonstantinou", "A. Iosevich", "S. Mkrtchyan", "J. Pakianathan" ], "categories": [ "math.CA" ], "abstract": "For a compact set $E \\subset \\mathbb R^d$ and a connected graph $G$ on $k+1$ vertices, we define a $G$-framework to be a collection of $k+1$ points in $E$ such that the distance between a pair of points is specified if the corresponding vertices of $G$ are connected by an edge. We regard two such frameworks as equivalent if the specified distances are the same. We show that in a suitable sense the set of equivalences of such frameworks naturally embeds in ${\\mathbb R}^m$ where $m$ is the number of \"essential\" edges of $G$. We prove that there exists a threshold $s_k