@article {CominiM96, title = {Compositionality properties of {\i}t SLD-derivations}, journal = {Theoretical Computer Science}, volume = {211}, number = {1-2}, year = {1999}, pages = {275{\textendash}309}, abstract = {The paper introduces a semantics for definite logic programs expressed in term of SLD-derivations and studies various properties of SLD-derivations by using the above semantics. The semantics of a program is a goal-independent denotation, which can equivalently be specified by a denotational semantics and a transition system. The denotation is proved to be correct, minimal, AND-compositional and OR-compositional. The denotational semantics and the transition system are defined in terms of a set of primitive semantic operators, whose properties are directly related to the properties of the denotation. The SLD-derivations semantics has been designed to act as collecting semantics for a framework of abstract semantics in the literature.}, author = {Marco Comini and Maria Chiara Meo} }