In the US as well as in Europe, migration and migration policy is one of the top issues. This timely volume gathers distinguished authors from academic institutions throughout Europe addressing the growing importance of migration policy making and the refugee crisis that European Union member states and other countries are currently facing. By focusing on the most important effects that the migration from Third World countries has brought to the European Union, they provide a critical over...

The book describes how curvature measures can be introduced for certain classes of sets with singularities in Euclidean spaces. Its focus lies on sets with positive reach and some extensions, which include the classical polyconvex sets and piecewise smooth submanifolds as special cases. The measures under consideration form a complete system of certain Euclidean invariants. Techniques of geometric measure theory, in particular, rectifiable currents are applied, and some important integral-...