Preface: Special issue dedicated to Distance Geometry

This preface introduces the special issue of the Journal of Global Optimization dedicated to the workshop “Distance Geometry Theory and Applications” (DGTA16) which took place at the DIMACS Center, Rutgers University, Piscataway NJ, USA.     

Preface Special issue on Adaptive and Multilevel Methods in Computational Electromagnetics

In numerical analysis attention to problems arising in electromagnetic field computation had been scant for a long time, dwarfed by research efforts devoted to areas like computational fluid mechanics and numerical methods for elasticity. By the mid 1990s the situation was poised to change prompted by the invention of a new class of finite elements, the edge elements, tailored to the spatial discretization of electromagnetic fields.     

The Generic Special Scroll of Genus g in P N : Special Scrolls in P3

We study the generic linearly normal special scroll of genus g in P ^N . Moreover, we give a complete classification of the linearly normal scrolls in P ³ of genus 2 and 3.