Evaluates the edge where r_TstarU is on the boundary.
candidate3(r_TstarU_lower, r_TstarU_upper, k_lower, k_upper, obs)
Vector of lower bounds of endogeneity
Vector of upper bounds of endogeneity
Vector of lower bounds on measurement error
Vector of upper bounds on measurement error
Observables generated by get_observables
List containing vector of lower bounds and vector of upper bounds of r_uz