Sommaire

Commutative semigroups that are nil of index 2 and have no irreducible elements
p. 1-7
Non-singular covers over monoid rings
p. 9-17
Order convergence of vector measures on topological spaces
p. 19-27
Existence of positive solution of a singular partial differential equation
p. 29-40
An existence and multiplicity result for a periodic boundary value problem
p. 41-61
A multidimensional integration by parts formula for the Henstock-Kurzweil integral
p. 63-74
On reflexivity and hyperreflexivity of some spaces of intertwining operators
p. 75-83
Rainbow connection in graphs
p. 85-98
Oscillatory and nonoscillatory behaviour of solutions of difference equations of the third order
p. 99-112