1. Aspherical group presentations

   • Ian M. Chiswell
   • Donald J. Collins
   • Johannes Huebschmann

   OriginalPaper Pages: 1 - 36

2. Generalized identities and semiprime rings with involution

   • Constantin I. Beidar
   • Alexander V. Mikhalev
   • Catherine Salavova

   OriginalPaper Pages: 37 - 62

3. Function fields of quadratic forms

   • Robert W. Fitzgerald

   OriginalPaper Pages: 63 - 76

4. An inequality between the exterior diameter and the mean curvature of bounded immersions

   • Luquesio P. de M. Jorge
   • Frederico V. Xavier

   OriginalPaper Pages: 77 - 82

5. Applications of model theory to representations of finite-dimensional algebras

   • Christian Herrmann
   • Christian U. Jensen
   • Helmut Lenzing

   OriginalPaper Pages: 83 - 98

6. Über die Entwicklungen nach EigenfunktionenN-irregulärer Eigenwertprobleme mit zerfallenden Randbedingungen

   • Manfred Wolter

   OriginalPaper Pages: 99 - 113

7. On the homotopy of non-nilpotent spaces

   • Jean-Claude Hausmann

   OriginalPaper Pages: 115 - 123

8. On the number of faces of simplicial complexes and the purity of Frobenius

   • Peter Schenzel

   OriginalPaper Pages: 125 - 142

9. Correction to: Constructing lens spaces by surgery on knots

   • Ronald Fintushel
   • Ronald Stern

   Erratum Pages: 143 - 143