Balkan Journal of Geometry 
and Its Applications 
(BJGA)

Volume 10 (2005), No. 1

Homagial volume dedicated
to the Romanian mathematician Gheorghe Tzitzeica

ISSN 1224-2780
[the electronic edition * PDF files]

1. Foreword
   pages: iii-v. PDF
    
2. V. Preda, Opening statement (Cuvânt de deschidere)
   pages: vi-vii. PDF
   
   
3. L. Nicolescu, Opening statement,
   pages: viii-ix. PDF
   
   
4. K. Teleman, Homage to Gheorghe Tzitzeica,
   page: x. PDF
   
   
   

Historical Notes

5. V. Cruceanu, Research works of Romanian mathematicians on centro-affine geometry,
   pages: 1-5. PDF
   
   
6. F. Nicolescu and L. Nicolescu, Gheorghe Tzitzeica - Romanian scientist of international recognition,
   pages: 6-10. PDF
   
7. L. Nicolescu, Gh. Vranceanu, Gheorghe Vranceanu - successor of Gheorghe Tzitzeica at the Geometry chair of the University of Bucharest,
   pages: 11-20. PDF
   
   
8. N. Soare, Gheorghe Tzitzeica and Affine Differential Geometry,
   pages: 21-23. PDF
   
9. N. Soare, Geometry - an irreductible component of Culture,
   pages: 24-27. PDF
   
   
10. N. Soare, Recent research in Affine Differential Geometry,
    pages: 28-31. PDF
    
    
11. G.T. Pripoae and G. Radu, Gheorghe Tzitzeica - an incomplete bibliography,
    pages: 32-56. PDF
    
    
12. A.M. Teleman
    Mathematics and crystallography,
    pages: 57-58, AMS Subject Classification: 58J70, 53C99, 35A15.
    PDF
    
    
13. K. Teleman, On the mathematical work of Gheorghe Tzitzeica,
    pages: 59-64. PDF
    
    
14. P. Verstraelen, Geometry and Vision,
    pages: 65-68. PDF
    

1. V.Balan and S.A.Vilcea, The Tzitzeica surface as solution of PDE systems
   pages: 69-72, AMS Subject Classification: 58J70, 53C99, 35A15.
   PDF
   
   
2. N. Bîla
   Symmetry groups and Lagrangians associated with Tzitzeica surfaces,
   pages: 73-91, AMS Subject Classification: 58J70, 53C99, 35A15.
   PDF
   
   
3. M. Crasmareanu
   Tzitzeica figuratrices in Hamilton Geometry,
   pages: 92-97, AMS Subject Classification: 53A07, 53C60.
   PDF
   
   
4. L. Nicolescu
   Champs presque m - speciaux dans l'algebre associee a un champ tensoriel
   du type (1,2),
   pages: 98-107, AMS Subject Classification: 53B20, 53B21.
   PDF
   
   
5. K. Teleman and A.M. Teleman
   Tzitzeica -- Backlund theorems,
   pages: 108-109, AMS Subject Classification: 53A07, 53A20, 53A25.
   PDF
   
   
6. C. Udriste
   Tzitzeica theory - opportunity for reflection in Mathematics,
   pages: 110-120, AMS Subject Classification: 58J70, 35A15, 53C99.
   PDF

1. E.I. Hirica
   On some special vector fields,
   pages: 121-126, AMS Subject Classification: 53B05, 53B20, 53B21.
   PDF
   
   
2. L. Nicolescu
   Une extension d'un theoreme concernant les metriques pseudoriemanniennes conformes,
   pages: 127-130, AMS Subject Classification: 53B20, 53B21.
   PDF
   
   
3. L. Nicolescu et T.V. Oprea
   Quelques remarques sur les connexions semi-symetriques metriques,
   pages: 131-144, AMS Subject Classification: 53B20, 53B21.
   PDF
   
   
4. S.M. Osnaga
   On rank one matrices and invariant subspaces,
   pages: 145-148, AMS Subject Classification: 15A03.
   PDF
   
   
5. C. Pintea, Homology and homotopy groups of the complement of certain family of fibers in a critical point problem,
   pages: 149-154, AMS Subject Classification: 55R05, 55Q05,55N10.
   PDF
   
   
6. C.L. Pripoae and G.T. Pripoae,
   Generalized invexity on differentiable manifolds,
   pages: 155-164, AMS Subject Classification: 90C30.
   PDF
   
   
7. O. Simionescu-Panait, Cross effects in mechanics of solid continua,
   pages: 165-174, AMS Subject Classification: 74E15, 74J30.
   PDF
   
   
8. C. Sterbeti
   Higher order Osserman pseudo-Riemannian manifolds of neutral signature (2,2),
   pages: 175-178, AMS Subject Classification: 53A45, 53C35, 53C50.
   PDF
   

Volume sponsored by  UNIVERSITY POLITEHNICA OF BUCHAREST