for the past quarter of a century iran has advocated the setting up of a security regime in the persian gulf by littoral states that excludes foreign powers. this paper examines the reasons behind iran's opposition to foreign participation in persian gulf security arrangements; the steps iran has taken to gain the support of other littoral states for its scheme, and the prospects for iran&...

Constructs, maintains, modifies, traverses, queries, and presents arrangements on two-dimensional parametric surfaces. Complete and Robust All inputs are handled correctly (including degenerate input). Exact number types are used to achieve robustness. Generic – easy to interface, extend, and adapt Modular – geometric and topological aspects are separated Supports among the others: various poin...

Given a finite collection S of geometric objects such as hyperplanes or spheres in R , the arrangement A(S) is the decomposition of R into connected open cells of dimensions 0, 1, . . . , d induced by S. Besides being interesting in their own right, arrangements of hyperplanes have served as a unifying structure for many problems in discrete and computational geometry. With the recent advances ...