1. On the Ricci curvature of a hypersurface in a space form

   • Mehmet Erdoğan

   OriginalPaper Pages: 221 - 225

2. Four-dimensional compact projective planes with doubly transitive action on the fixed pencil

   • Hauke Klein

   OriginalPaper Pages: 227 - 255

3. Processes of flats induced by higher dimensional processes III

   • Paul Goodey
   • Ralph Howard
   • Mark Reeder

   OriginalPaper Pages: 257 - 269

4. An ‘odd’ formula for the volume of three-dimensional lattice polyhedra

   • Krzysztof KoŁodziejczyk

   OriginalPaper Pages: 271 - 278

5. On the definition of isomorphisms of linear spaces

   • Alexander Kreuzer

   OriginalPaper Pages: 279 - 283

6. Surgery on 3-manifolds with \(\mathbb{S}\) ¹-actions

   • Alberto Cavicchioli
   • Friedrich Hegenbarth

   OriginalPaper Pages: 285 - 313

7. Three distinct distances in the plane

   • Heiko Harborth
   • Lothar Piepmeyer

   OriginalPaper Pages: 315 - 327

8. On a problem of H. N. Gupta

   • Andreas Blass
   • Victor Pambuccian

   OriginalPaper Pages: 329 - 331