## The Algebra of Logic Programming (2001)

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### BibTeX

@MISC{Seres01thealgebra,

author = {Silvija Seres},

title = {The Algebra of Logic Programming},

year = {2001}

}

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### Abstract

At present, the field of declarative programming is split into two main areas based on different formalisms; namely, functional programming, which is based on lambda calculus, and logic programming, which is based on firstorder logic. There are currently several language proposals for integrating the expressiveness of these two models of computation. In this thesis we work towards an integration of the methodology from the two research areas. To this end, we propose an algebraic approach to reasoning about logic programs, corresponding to the approach taken in functional programming. In the first half of the thesis we develop and discuss a framework which forms the basis for our algebraic analysis and transformation methods. The framework is based on an embedding of definite logic programs into lazy functional programs in Haskell, such that both the declarative and the operational semantics of the logic programs are preserved. In spite of its conciseness and apparent simplicity, the embedding proves to have many interesting properties and it gives rise to an algebraic semantics of logic programming. It also allows us to reason about logic programs in a simple calculational style, using rewriting and the algebraic laws of combinators. In the embedding, the meaning of a logic program arises compositionally from the meaning of its constituent subprograms and the combinators that connect them. In the second

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53 | Curry: A Truly Functional Logic Language
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Citation Context ...l of these can be subsumed within a unified system based on narrowing. This is being successfully done in several major projects, including the integrated functional logic programming languages Curry =-=[60]-=-, Escher [78], Babel [90], Mercury [129], and others. This research mainly focuses on unifying the expressiveness of the two underlying programming models; however, it is also important to unify the u... |

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46 |
The relation between logic and functional languages: a survey
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43 |
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(Show Context)
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