CONTENTS
A r t i c l e s :
Bohdan Zeiinka: Signed total domination number of a graph . . . 225 Salar Y. Alsardary: An upper bound on the basis number of the powers of the complete
graphs . . . 231
Chong-Yun Chao, Shaocen Hun: On the toughness of cycle permutation graphs . . . . 239 Roman Fric, Jan Jakubtk: Sequential convergences on Boolean algebras denned by
systems of maximal filters . . . 261
Wieslaw A. Dudek, Zoran Stojakovic: On Rusakov's n-ary rs-groups . . . 275 M. S. Riveros, A. de la Torre: On the best ranges for A and RH . . . 285 Pavel Rehak: Oscillatory properties of second order half-linear difference equations . 303 Carmen H. Mancera, Pedro J . Paul: On Ptak's generalization of Hankel operators . 323 Sangwon Park: The general structure of inverse polynomial modules . . . 343 Gary Chartrand, Elzbieta B. Jarrett, Farrokh Saba, Ebrahim Salehi, Ping Zhang: F-
continuous graphs . . . 351 Javier Duoandikoetxea: A unified approach to several inequalities involving functions
and derivatives . . . 363 Ehrhard Behrends, Jorg Schmeling: Strongly mixing sequences of measure preserving
transformations . . . 377
Stuart A. Steinberg: Finitely valued /-modules, an addendum . . . 387 Paul F. Conrad, Michael R. Darnel: Subgroups and hulls of Specker lattice-ordered
groups . . . 395
Mario Petrich: Certain partial orders on semigroups . . . 415 Surjit Singh Khurana: Strict topologies as topological algebras . . . 433 Manoj Changat, Sandi Klavzar, Henry Martyn Mulder: The all-paths transit function
of a graph . . . 439