@MISC{Lifschitz98oncalculational, author = {Vladimir Lifschitz}, title = {On Calculational Proofs}, year = {1998} }
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Abstract
This note is about the "calculational style" of presenting proofs introduced by Dijkstra and Scholten and adopted in some books on theoretical computer science. We define the concept of a calculation, which is a formal counterpart of the idea of a calculational proof. The definition is in terms of a new formalization DS of predicate logic.