CONTENTS
A r t i c l e s :
P. M. G. Manchon: Hypersurfaces in R" and critical points in their external region 1 Bohdan Zeiinka: Domination in generalized Petersen graphs . . . 11 Deborah 0. Ajayi, Samuel A. Ilori: Stiefel-Whitney classes of the flag manifold
RF(1,1, n - 2) . . . 17 Daniel Hort, Jan Chvalina, Jiri Moucka: Characterizations of totally ordered sets by
their various endomorphisms . . . 23
Ladislav Nebesky: New proof of a characterization of geodetic graphs . . . 33 Jung R. Cho, Tomds Kepka: Finite simple zeropotent paramedial groupoids . . . 41 Hans Weber: Two extension theorems. Modular functions on complemented lattices 55 ,]. C. Resales, J . I . Garcia-Garcia: Principal ideals of finitely generated commutative
monoids . . . 75 Dorel Barbu, Gheorghe Boc/jan: Approximations to mild solutions of stochastic semi-
linear equations with non-Lipschitz coefficients . . . 87 T. V. Panchapagesan: A Borel extension approach to weakly compact operators on
Cb(T) . . . 97
Andrzej Walendziak: Weak congruences of an algebra with the CEP and the WCIP 117 Peter V. Danchev: Basic subgroups in abelian group rings . . . 129 H. G. Ince'. Cesaro wedge and weak Cesaro wedge FK-spaces . . . 141 Torben Maack Bisgaard: On the Stieltjes moment problem on semigroups . . . 155 Mauro Francaviglia, Marcella Palese, Raffaele Vitolo: Symmetries in finite order vari-
ational sequences . . . 197 Aurelian Cornea: On the set of solutions of some nonconvex nonclosed hyperbolic
differential inclusions . . . 215
