This report provides a brief insight into the prevalent approaches to defining and conceptualizing terrorism. It suggests that despite the ongoing intense public debate and academic discourse on the theoretical framework, some largely uncontested and customary conceptual and practical features of terrorism can be derived from the re-examination of contemporary conflict studies and international law.

The plane wave discontinuous Galerkin (PWDG) method for the Helmholtz equation was introduced and analyzed in [Gittelson, C., Hiptmair, R., and Perugia, I. Plane wave discontinuous Galerkin methods: Analysis of the h-version. Math. Model. Numer. Anal. 43 (2009), 297–331] as a generalization of the so-called ultra-weak variational formulation, see [O. Cessenat and B. Despr´es, Application of an ultra weak variational formulation of elliptic ...

We propose a family of preconditioners for linear systems of equations arising from a piecewise polynomial symmetric Interior Penalty Discontinuous Galerkin (IP-DG) discretization of H(curl, )- elliptic boundary value problems on conforming meshes. The design and analysis of the proposed preconditioners relies on the auxiliary space method (ASM) employing an auxiliary space of H(curl, )- conforming finite element functions together with ...