#
Acta Mathematica Academiae Paedagogicae Nyíregyháziensis

## Vol. 23, No. 1, 2007
· Contents

Csaba Szántó:

On some formulas in the Hall algebra of the Kronecker algebra

A. Iranmanesh and A. Jafarzadeh:

Characterization of finite groups by their commuting graph

Zheng Liu:

More on inequalities of Simpson type

Adib A.N. and Radjabov N.:

Various representations for the system of non-model hyperbolic equations with regular coefficients

A. Stouti and A. Maaden:

Fixed Points Theorems for $n$-Valued Multifunctions

Memudu O. Olatinwo:

Some common fixed point theorems for selfmappings in uniform space

István Krisztin Német:

On the fixed point of a collineation of the real projective plane

Lovejoy Das:

Second Order Parallel Tensors on $\alpha $ - Sasakian Manifold

Sharief Deshmukh, Haila Al-Odan and Tahany A. Shaman:

Tangent bundle of the hypersurfaces in a Euclidean space

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*Publication date for the electronic files: 27 Jun 2007.
Last modified: 2 July 2007.

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2007 ELibM and
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