1. On Quadratic Forms Between Spheres

   • Shaoping Chang

   OriginalPaper Pages: 111 - 124

2. A New Class of Unitals in the Hughes Plane

   • Kenneth L. Wantz

   OriginalPaper Pages: 125 - 138

3. Semigroups in Möbius and Lorentzian Geometry

   • Jimmie D. Lawson

   OriginalPaper Pages: 139 - 180

4. Caps Embedded in Grassmannians

   • G. L. Ebert
   • K. Metsch
   • T. Szönyi

   OriginalPaper Pages: 181 - 196

5. Lagrangian Spheres in the Complex Euclidean Space Satisfying a Geometric Equality

   • Ildefonso Castro

   OriginalPaper Pages: 197 - 208

6. Monostatic Simplexes II

   • Robert Dawson
   • Wendy Finbow
   • Philip Mak

   OriginalPaper Pages: 209 - 219