User:MWinter4/Stress (rigidity theory)

In rigidity theory a stress (or self-stress) on a framework $$(G,p)$$ assignes to each edge $$e\in E(G)$$ a real number $$\omega_e$$.

A stress is an equilibrium stress if at each vertex $$v\in V(G)$$ holds


 * $$\sum_{w\,:\,vw\in E(G)}\!\!\!\! \omega_{vw}(p_v-p_w) = 0.$$