Preface

Contents

• The Language of Mathematics
  [Abstract]
  Stancho Dimiev
  

• Initial Value Problem for the Double-Complex Laplace Operator. Eigenvalue Approaches
  [Abstract]
  Lilia N. Apostolova
  

• On the Homology Defined by the Electromagnetic Energy Tensor
  [Abstract]
  Stoil Donev and Maria Tashkova
  

• Geometry of Pre-Contrast Functions and Non-Conservative Estimating Functions
  [Abstract]
  Masayuki Henmi and Hiroshi Matsuzoe
  

• A Mathematical Base for Fibre Bundle Formulation of Lagrangian Quantum Field Theory
  [Abstract]
  Bozhidar Z. Iliev
  

• A Note on a Homogeneous Structure on an Almost Contact Metric Space
  [Abstract]
  Takashi Koda
  

• Linear Weingarten Surfaces in Hyperbolic Three-Space
  [Abstract]
  Masatoshi Kokubu
  

• Geometric Structures in Four-Dimension and Almost Hermitian Structures
  [Abstract]
  Yasuo Matsushita
  

• On Some Deformations of the Cassinian Oval
  [Abstract][Full Text - DjVu]
  Ivaïlo M. Mladenov, Mariana T. Hadzhilazova, Peter A. Djondjorov, and Vassil M. Vassilev
  

• Closed Hypersurfaces in Riemannian Manifolds Whose Second Fundamental Forms are of Constant Length
  [Abstract]
  Takashi Okayasu
  

• On Ventcel's Type Boundary Condition for Laplace Operator in a Sector
  [Abstract]
  Marta Teofilova
  

• Multicomponent Nonlinear Systems of Bose-Fermi Fields: Exact Solutions
  [Abstract]
  Nikolay A. Kostov, Vladimir S. Gerdjikov, and Tihomir I. Valchev
  

• Travelling Waves for Some Generalized Boussinesq Type Equations
  [Abstract]
  Petar Popivanov
  

• An Optimal System of One-Dimensional Symmetry Lie Algebras of Coupled Nonlinear Schrödinger Equations
  [Abstract][Full Text - DjVu]
  Vladimir I. Pulov
  

• Collision Dynamics of Polarized Solitons in Linearly Coupled Nonlinear Schrödinger Equations
  [Abstract]
  Michail D.Todorov and Christo I. Christov
  

• On Certain Reductions of Integrable Equations on Symmetric Spaces
  [Abstract]
  Tihomir I. Valchev
  

• Quadratic Casimir Invariants for "Universal" Lie Algebra Extensions
  [Abstract]
  Alexandar B. Yanovski and Moses C. dos Santos
  

• Two Basic Uncertainty Relations in Quantum Mechanics
  [Abstract]
  Andrey Angelow
  

• Analytic Description of the Equilibrium Shapes of Elastic Rings Under Uniform Hydrostatic Pressure
  [Abstract][Full Text - DjVu]
  Peter Djondjorov, Vassil Vassilev and Ivaïlo Mladenov
  

• Minimizers of Hartree Type Functionals and Related Interpolation Inequalities
  [Abstract]
  Hristo Genev and George Venkov
  

• An Approach for Computing the Euclidean Motions on the Base of Measurement Data
  [Abstract][Full Text - DjVu]
  Clementina D. Mladenova
  

• Dynamical Invariants and Robertson-Schrödinger Correlated States of Electromagnetic Field in Nonstationary Linear Media
  [Abstract]
  Dimitar A. Trifonov and Andrey K. Angelow
  

• Cell Membranes Under Hydrostatic Pressure Subjected to Micro-Injection
  [Abstract][Full Text - DjVu]
  Vassil M. Vassilev, Kostadin G. Kostadinov, Ivaïlo M. Mladenov, Assen A. Shulev, Georgi I. Stoilov, and Peter A. Djondjorov