Cauchy problem for the wave equation on non-globally hyperbolic manifolds

We consider Cauchy problem for wave equation on two types of non-global hyperbolic manifolds: Minkowski plane with an attached handle and Misner space. We prove that the classical solution on a plane with a handle exists and is unique if and only if a finite set of point-wise constraints on initial values is satisfied. On the Misner space the existence and uniqueness of a solution is equivalent to much stricter constraints for the initial data.