Originality: presents a new way to obtain the soundness result of a given program logic for objects (by Abadi and Leino); this also allows the analysis of the strengths and weaknesses of the logic. Rigour: detailed mathematical model and full proof using denotational semantics Impact: cited as only serious attempt to understand logic for higher-order store denotationally, also acknowledged & cited by Abadi and Leino Significance: potential blueprint for correctness proofs of similar logics