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A Typed Pattern Calculus
 ACM Trans. Program. Lang. Syst
, 1996
"... The theory of programming with patternmatching function definitions has been studied mainly in the framework of firstorder rewrite systems. We present a typed functional calculus that emphasizes the strong connection between the structure of whole pattern definitions and their types. In this calcu ..."
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Cited by 66 (15 self)
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The theory of programming with patternmatching function definitions has been studied mainly in the framework of firstorder rewrite systems. We present a typed functional calculus that emphasizes the strong connection between the structure of whole pattern definitions and their types. In this calculus typechecking guarantees the absence of runtime errors caused by nonexhaustive patternmatching definitions. Its operational semantics is deterministic in a natural way, without the imposition of adhoc solutions such as clause order or "best fit". In the spirit of the CurryHoward isomorphism, we design the calculus as a computational interpretation of the Gentzen sequent proofs for the intuitionistic propositional logic. We prove the basic properties connecting typing and evaluation: subject reduction and strong normalization. We believe that this calculus offers a rational reconstruction of the patternmatching features found in successful functional languages. CNRS and Laboratoire...
Pure Pattern Type Systems
 In POPL’03
, 2003
"... We introduce a new framework of algebraic pure type systems in which we consider rewrite rules as lambda terms with patterns and rewrite rule application as abstraction application with builtin matching facilities. This framework, that we call “Pure Pattern Type Systems”, is particularly wellsuite ..."
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Cited by 43 (20 self)
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We introduce a new framework of algebraic pure type systems in which we consider rewrite rules as lambda terms with patterns and rewrite rule application as abstraction application with builtin matching facilities. This framework, that we call “Pure Pattern Type Systems”, is particularly wellsuited for the foundations of programming (meta)languages and proof assistants since it provides in a fully unified setting higherorder capabilities and pattern matching ability together with powerful type systems. We prove some standard properties like confluence and subject reduction for the case of a syntactic theory and under a syntactical restriction over the shape of patterns. We also conjecture the strong normalization of typable terms. This work should be seen as a contribution to a formal connection between logics and rewriting, and a step towards new proof engines based on the CurryHoward isomorphism.
Tom: Piggybacking Rewriting on Java
, 2007
"... We present the Tom language that extends Java with the purpose of providing high level constructs inspired by the rewriting community. Tom furnishes a bridge between a general purpose language and higher level specifications that use rewriting. This approach was motivated by the promotion of rewriti ..."
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Cited by 34 (6 self)
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We present the Tom language that extends Java with the purpose of providing high level constructs inspired by the rewriting community. Tom furnishes a bridge between a general purpose language and higher level specifications that use rewriting. This approach was motivated by the promotion of rewriting techniques and their integration in large scale applications. Powerful matching capabilities along with a rich strategy language are among Tom’s strong points, making it easy to use and competitive with other rule based languages.
Matching Power
 Proceedings of RTA’2001, Lecture Notes in Computer Science, Utrecht (The Netherlands
, 2001
"... www.loria.fr/{~cirstea,~ckirchne,~lliquori} Abstract. In this paper we give a simple and uniform presentation of the rewriting calculus, also called Rho Calculus. In addition to its simplicity, this formulation explicitly allows us to encode complex structures such as lists, sets, and objects. We pr ..."
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Cited by 30 (20 self)
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www.loria.fr/{~cirstea,~ckirchne,~lliquori} Abstract. In this paper we give a simple and uniform presentation of the rewriting calculus, also called Rho Calculus. In addition to its simplicity, this formulation explicitly allows us to encode complex structures such as lists, sets, and objects. We provide extensive examples of the calculus, and we focus on its ability to represent some object oriented calculi, namely the Lambda Calculus of Objects of Fisher, Honsell, and Mitchell, and the Object Calculus of Abadi and Cardelli. Furthermore, the calculus allows us to get object oriented constructions unreachable in other calculi. In summa, we intend to show that because of its matching ability, the Rho Calculus represents a lingua franca to naturally encode many paradigms of computations. This enlightens the capabilities of the rewriting calculus based language ELAN to be used as a logical as well as powerful semantical framework. 1
Rewriting calculus with fixpoints: Untyped and firstorder systems
 In Postproceedings of TYPES, Lecture Notes in Computer Science
, 2003
"... Abstract The rewriting calculus, also called ρcalculus, is a framework embedding λcalculus and rewriting capabilities, by allowing abstraction not only on variables but also on patterns. The higherorder mechanisms of the λcalculus and the pattern matching facilities of the rewriting are then bot ..."
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Cited by 25 (10 self)
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Abstract The rewriting calculus, also called ρcalculus, is a framework embedding λcalculus and rewriting capabilities, by allowing abstraction not only on variables but also on patterns. The higherorder mechanisms of the λcalculus and the pattern matching facilities of the rewriting are then both available at the same level. Many type systems for the λcalculus can be generalized to the ρcalculus: in this paper, we study extensively a firstorder ρcalculus à la Church, called ρ stk The type system of ρ stk � allows one to type (object oriented flavored) fixpoints, leading to an expressive and safe calculus. In particular, using pattern matching, one can encode and typecheck term rewriting systems in a natural and automatic way. Therefore, we can see our framework as a starting point for the theoretical basis of a powerful typed rewritingbased language.
Rewriting calculus with(out) types
 Proceedings of the fourth workshop on rewriting logic and applications
, 2002
"... The last few years have seen the development of a new calculus which can be considered as an outcome of the last decade of various researches on (higher order) term rewriting systems, and lambda calculi. In the Rewriting Calculus (or Rho Calculus, ρCal), algebraic rules are considered as sophisticat ..."
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Cited by 22 (13 self)
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The last few years have seen the development of a new calculus which can be considered as an outcome of the last decade of various researches on (higher order) term rewriting systems, and lambda calculi. In the Rewriting Calculus (or Rho Calculus, ρCal), algebraic rules are considered as sophisticated forms of “lambda terms with patterns”, and rule applications as lambda applications with pattern matching facilities. The calculus can be customized to work modulo sophisticated theories, like commutativity, associativity, associativitycommutativity, etc. This allows us to encode complex structures such as list, sets, and more generally objects. The calculus can either be presented “à la Curry ” or “à la Church ” without sacrificing readability and without complicating too much the metatheory. Many static type systems can be easily pluggedin on top of the calculus in the spirit of the rich typeoriented literature. The Rewriting Calculus could represent a lingua franca to encode many paradigms of computations together with a formal basis used to build powerful theorem provers based on lambda calculus and efficient rewriting, and a step towards new proof engines based on the CurryHoward isomorphism. 1
Rewrite Strategies in the Rewriting Calculus
 WRS 2003
, 2003
"... This paper presents an overview on the use of the rewriting calculus to express rewrite strategies. We motivate first the use of rewrite strategies by examples in the ELAN language. We then show how this has been modeled in the initial version of the rewriting calculus and how the matching power of ..."
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Cited by 18 (7 self)
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This paper presents an overview on the use of the rewriting calculus to express rewrite strategies. We motivate first the use of rewrite strategies by examples in the ELAN language. We then show how this has been modeled in the initial version of the rewriting calculus and how the matching power of this framework facilitates the representation of powerful strategies.
A rewriting calculus for cyclic higherorder term graphs
 in "2nd International Workshop on Term Graph Rewriting  TERMGRAPH’2004
, 2004
"... graphs ..."
The simply typed rewriting calculus
 WRLA 2004
, 2004
"... The rewriting calculus is a rule construction and application framework. As such it embeds in a uniform way term rewriting and lambdacalculus. Since rule application is an explicit object of the calculus, it allows us also to handle the set of results explicitly. We present a simply typed version o ..."
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Cited by 9 (5 self)
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The rewriting calculus is a rule construction and application framework. As such it embeds in a uniform way term rewriting and lambdacalculus. Since rule application is an explicit object of the calculus, it allows us also to handle the set of results explicitly. We present a simply typed version of the rewriting calculus. With a good choice of the type system, we show that the calculus is type preserving and terminating, i.e. verifies the subject reduction and strong normalization properties.
Probabilistic rewrite strategies: Applications to elan
 Rewriting Techniques and Applications
, 2002
"... Abstract. Recently rule based languages focussed on the use of rewriting as a modeling tool which results in making specifications executable. To extend the modeling capabilities of rule based languages, we explore the possibility of making the rule applications subject to probabilistic choices. We ..."
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Cited by 8 (2 self)
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Abstract. Recently rule based languages focussed on the use of rewriting as a modeling tool which results in making specifications executable. To extend the modeling capabilities of rule based languages, we explore the possibility of making the rule applications subject to probabilistic choices. We propose an extension of the ELAN strategy language to deal with randomized systems. We argue trough several examples that we propose indeed a natural setting to model systems with randomized choices. This leads us to interesting new problems, and we address the generalization of the usual concepts in abstract reduction systems to randomized systems. 1