δ-Ideals in pseudo-complemented distributive join-semilattices

The concept of a [Formula: see text]-ideal is introduced in a pseudo-complemented distributive join semilattice with 0 and some properties of these ideals are obtained. We also give a characterization for a pseudo-complemented distributive join-semilattice to be a Stone join-semilattice. Also, in a distributive join-semilattice a characterization for an ideal to be a [Formula: see text]-ideal is proved.