#
Czechoslovak Mathematical Journal

## Vol. 55, No. 1, 2005
· Contents

N. I. Sandu:

Infinite independent systems of the identities of
the associative algebra over an infinite field
of characteristic $p > 0$

Mukti Acharya, Tarkeshwar Singh:

Graceful signed graphs: II. The case of signed cycles with connected negative sections

Jelena V. Manojlovic:

Integral averages and oscillation of second order sublinear differential equations

Ales Drapal:

On multiplication groups of relatively free quasigroups isotopic to Abelian groups

Changming Ding:

The omega limit sets of subsets in a metric space

Jan Kuhr:

Ideals of noncommutative $DR\ell$-monoids

Young-Ho Kim:

On some discrete inequalities in two independent variables

Changming Ding:

Orbits connecting singular points in the plane

Simion Breaz:

A Morita type theorem for a sort of
quotient categories

R. W. Hansell, L. Oncina:

Generalized first class selectors for upper
semi-continuous set-valued maps in
Banach spaces

Danica Jakubikova-Studenovska:

On a representation of monounary algebras

De-xiang Ma, Xue-gang Chen, Liang Sun:

On total restrained domination in graphs

Ioannis K. Argyros:

New sufficient convergence conditions
for the secant method

B. P. Damyanov:

Balanced Colombeau products of the distributions $x_{\pm}^{-p}$ and $x^{-p}$

Toshiaki Adachi, Sadahiro Maeda:

Characterization of totally umbilic hypersurfaces
in a space form by circles

M. Bartusek, M. Cecchi, Z. Dosla, M. Marini:

Global monotonicity and oscillation
for second order differential equation

Jan Jakubik:

On vector lattices of elementary Caratheodory functions

Yong Zhou, B. G. Zhang, Y. Q. Huang:

Existence for nonoscillatory solutions of
higher order nonlinear neutral
differential equations

Beatrix Bacova, Bozena Dorociakova:

Oscillation of nonlinear differential systems
with retarded arguments

Eva Spanikova:

Oscillation of differential systems of neutral type