  The minimal infinitesimal rigidity of bar-joint frameworks in the
non-Euclidean spaces (R^2, ||.||_q) are characterised in terms of (2,2)-tight
graphs. Specifically, a generically placed bar-joint framework (G,p) in the
plane is minimally infinitesimally rigid with respect to a non-Euclidean l^q
norm if and only if the underlying graph G = (V,E) contains 2|V|-2 edges and
every subgraph H=(V(H),E(H)) contains at most 2|V(H)|-2 edges.
