1997/51/1-2
On the context-freeness of a class of primitive words
L. Kászonyi and M. Katsura
A polar-coordinate model of the hyperbolic space
L. Németh
On extended topologies. Sequential operators and Heine criteria
Stanisław Gniłka
On generalized pseudo symmetric manifolds
M. C. Chaki and S. P. Mondal
Uniqueness of roots in $\ell^1(\Gamma ,\mathbb{N}_0)$ over lattices in simply connected nilpotent Lie groups
Daniel Neuenschwander
Lindeberg type central limit theorems on one dimensional hypergroups
Hansmartin Zeuner
On the cyclic and dihedral cohomology of Banach spaces
Y. Gh. Gouda
Semigroups of set-valued functions
Jolanta Olko
Orthogonally additive mappings on free inner product $Z$-modules
Jürg Rätz
On the behaviour of Colombeau's generalized functions at a point. Applications to semilinear systems
S. Pilipović and M. Stojanović
A note on the completeness of higher order resolution
I. P. Kossey
Associativity equation revisited
Juan Carlos Candeal, Juan Ramón De Miguel, Esteban Induráin and Esteban Oloriz
Sasakian anti-holomorphic submanifolds of locally conformal Kaehler manifolds
Liu Ximin
Cut-elimination in the theory of definable sets of natural numbers
Albert G. Dragalin
Stability of the Cauchy equation with variable bound
Jacek Tabor
$210=14\times 15=5\times 6\times 7=\binom{21}{2}= \binom{10}{4}$
Ákos Pintér and Benjamin M. M. de Weger
A note on the Diophantine equation $D_1 x^2 +D_2 =2y^n $
Maohua Le