Copulas having Zero-Isoline and Economic Applications

use such copula to model the dependence between two random variables that cannot be both lower than given values, but each can be lower than the corresponding value. This can be used in the Phillips curve. Even we consider the values of inflation and unemployment ent or their rates, there exist a,b ∈R such that the cloud of points around the curve and around the line, respectively, have empty intersection with the set {(U,V)∈R2 U ≤ a,V ≤ b}, but it is possible to have separately U ≤ a or V ≤ b .