# Balkan Journal of Geometry

and Its Applications

(BJGA)

## ISSN 1224-2780

Volume 4 (1999), No. 2

Electronic Edition

DVI & PS files

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mview and dvips; hplj, hpdj from the LaTeX distribution; ghostscript.

### Contents

**J.X. da Cruz Neto, O.P. Ferreira, L.R.Lucambio Perez,**

*A Proximal Regularization of the Steepest Descent Method in Riemannian
Manifold*

pages: 1-8, AMS Subject Classification: 49M10, 90C30, 53C21

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**C.Dumitrescu,**

*Geometrical and Topological Structure of Magnetic Fields Generated
by Rectilinear Wires*

pages: 9-27, AMS Subject Classification: 53C80, 53B20

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**S.Gozdz, **

*A Convex Polygon as a Discrete Plane Curve*

pages: 29-48, AMS Subject Classification: 52C10, 42A32

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**F.Hantila, **

*Electromagnetic Field in Non-Linear Media*

pages: 49-62, AMS Subject Classification: 53C80

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**S.Ikeda, **

*Some Structural Considerations on the Theory of Gravitational
Field*

pages: 63-68, AMS Subject Classification: 83C40

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**H.S. Kim, Y.S. Pyo, **

*On the Chern-Type Problem in a Complex Projective Space*

pages: 69-81, AMS Subject Classification: 53C50; 53C55, 53C56

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**L.Nicolescu, G.Pripoae, **

*Riemannian Manifolds with Almost Constant Scalar Curvature*

pages: 83-92, AMS Subject Classification: 53B20, 53B21, 53C21

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**D.Opris, I.D.Albu, **

*Discrete Euler-Poincare and Euler-Poincare-Poisson Equations
for Semidirect Products and Principal Bundles*

pages: 93-102, AMS Subject Classification: 17B30

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**M.Purcaru, **

*Semi-Symmetric Conformal Metrical N-Linear Connections
in the Bundle of Accelerations*

pages: 103-108, AMS Subject Classification: 53C05

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**K.Trencevski, J.Stefanovski,
**

*On Parallel Vector Fields of Subbundles of Vector Bundles
with Linear and Non - Linear Connections*

pages: 109-115, AMS Subject Classification: 53B15, 35C10

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**Gr.Tsagas, Ch.Christophoridou,
A. Synefaki, **

*Determination of Invariant Inner Product on Seven Dimensional
Nilpotent Lie Algebras*

pages: 117-122, AMS Subject Classification: 17B40

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**C.Udriste, N.Bila,**

*Symmetry Group of Titeica Surfaces PDE*

pages: 123-140, AMS Subject Classification: 58G35, 53C99, 35A15

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*Volume sponsored by: *

POLITEHNICA UNIVERSITY OF BUCHAREST

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update: July 10, 2000**