Let G be a topological Kac–Moody group of rank 2 with symmetric Cartan matrix, defined over a finite field Fq . An example is G = SL(2,Fq((t−1))). We determine a positive lower bound on the covolumes of cocompact lattices in G, and construct a cocompact lattice Γ0 < G which realises this minimum. This completes the work begun in Part I, which considered the cases when G admits an edge-transitiv...

The classification of all dihedral triangular f-tilings of the Riemannian sphere S 2 whose prototiles are an equilateral triangle and an isosceles triangle and the identification of their symmetry groups are given. We also determine their classes of isogonality and isohedrality.

This report is the third of five companion documents to the Trusted Database Management System Interpretation of the Trusted Computer System Evaluation Criteria. The companion documents address topics that are important to the design and development of secure database management systems, and are written for database vendors, system designers, evaluators, and researchers. This report addresses p...

AARON is a program designed to investigate the cognitive principles underlying visual representation. Under continuous development for fifteen years, it is now able autonomously to make "freehand" drawings of people in garden-like settings. This has required a complex interplay between two bodies of knowledge: objectspecific knowledge of how people are constructed and how they move, together wi...

a 25 year-old construction worker underwent neck laceration following penetrating neck trauma in a falling incident. the 3rd tracheal ring was injured which was initially repaired and the patient was discharged in good general condition. (figure 1 shows the patient’s neck view after discharge from hospital).two months later the patient was again admitted due to provocative coughing and a metal ...