Abstract. For solving the non-linear equations governing force-free fields, an iterative methodology based on the splitting of the problem is described. On the basis of this splitting, three families of subproblems have to be solved numerically. The first problem consists to find a potential field. A mixed hybrid method is used to solve it. The second problem, which is a curl-div system, is sol...

Ehlers Danlos syndrome (EDS) is an inherited connective tissue disease due to impaired collagen metabolism. Joint hypermobility and skin hyper extensibility are the major findings. Six types of EDS are recognized. Type I or Gravis type is characterized by skin hyperextensibility, joint hypermobility, skin splitting autosoml dominancy inheritance, preterm premature rupture of membrane (PPROM) an...

This article examines ticket splitting in five different mixed-member electoral systems—Germany, New Zealand, Japan, Lithuania, and Russia—and indicates the shortcomings inherent in any analysis of such ticket splitting that does not take into account the presence of the personal vote. We find that the personal vote plays a central part in shaping ticket splitting in all of our cases except for...

In this article we discuss a combination between fourth-order finite difference methods and fourth-order splitting methods for 2D parabolic problems with mixed derivatives. The finite difference methods are based on higher-order spatial discretization methods, whereas the timediscretization methods are higher-order discretizations using CrankNicolson or BDF methods. The splitting methods are hi...