1. Periodic Solutions of the Burgers-Hopf Equation with Small Parameter and its Cellular Neural Network Model

   • Petar Popivanov
   • Angela Slavova
   • Pietro Zecca

   OriginalPaper 29 May 2008 Pages: 1 - 19

2. Smoothness of Hessenberg and Bidiagonal Forms

   • Luca Dieci
   • M. Grazia Gasparo
   • Alessandra Papini

   OriginalPaper 29 May 2008 Pages: 21 - 31

3. Positive Elements and Automatic Continuity of Algebra Morphisms

   • Abdellah El Kinani
   • Amine Mohammed Nejjari
   • Mohamed Oudadess

   OriginalPaper 29 May 2008 Pages: 33 - 42

4. Some Aspects on the Geometry of the Tangent Bundles and Tangent Sphere Bundles of a Riemannian Manifold

   • Marian Ioan Munteanu

   OriginalPaper 29 May 2008 Pages: 43 - 59

5. A Characterization of Some Classes of Harmonic Functions

   • Stevo Stević

   OriginalPaper 29 May 2008 Pages: 61 - 76

6. Diophantine Integral Geometry

   • Ahmed Abouelaz
   • Abdallah Ihsane

   OriginalPaper 29 May 2008 Pages: 77 - 99

7. Gradient Estimates for Solutions of Ultraparabolic Equations

   • Tarik Mohamed Touaoula
   • Noureddine Ghouali

   OriginalPaper 29 May 2008 Pages: 101 - 111

8. Three-Dimensional Naturally Reductive Homogeneous Lorentzian Manifolds

   • Nadjia Haouari
   • Wafaa Batat
   • Salima Rahmani

   OriginalPaper 29 May 2008 Pages: 113 - 131