[ The Types Forum (announcements only), http://lists.seas.upenn.edu/mailman/listinfo/types-announce ]

A one-year INRIA post-doctoral position is available: Title: Generation of construction functions guaranteeing algebraic invariants on concrete data types Aim: Although concrete data types are very useful in defining complex data structures, they are not always sufficient to adequately specify the data structures required by some algorithms. Often, only a subset of the concrete data type is in fact used since some invariants between the components are mandatory to ensure the correctness of the program. Now, many invariants can be described by using some equational theory. For instance, a sorted list is a particular representative of the equivalence class of lists modulo commutativity. The usual way to solve this problem is to use abstract data types or, better, private data types if one does not want to lose the ability of doing pattern matching. We propose to study the automatic generation of certified construction functions guaranteeing algebraic invariants on concrete data types, and develop an extension of OCaml with relational data types, that is, data types with invariants described by user defined equations. More information and online application on: http://www.talentsplace.com/syndication1/inria/frpostdoc/details.html?id=PGTFK026203F3VBQB6G68LONZ&LOV5=4508&LOV6=4514&LG=FR&Resultsperpage=20&nPostingID=1155&nPostingTargetID=3197&option=52&sort=DESC&nDepartmentID=19 Competences and profile: The position involves research and development in the area of functional programming, rewriting theory (in particular Knuth-Bendix completion) and, possibly, interactive theorem proving (experience with a proof assistant such as Coq is welcome). Speaking french is not necessary. Requirements: Candidates are required to hold a PhD degree between May 2006 and June 2007. Salary: the monthly gross salary is approx. EUR 2,150. Environment: - laboratory: LORIA (http://www.loria.fr/) - team: Protheo (http://protheo.loria.fr/) - project: Quotient (http://quotient.loria.fr/) - location: Nancy, in the East of France is at 1:30 from Paris by tren, 1:30 from Luxembourg airport by car, and 1:30 from Germany and Belgium. Application deadline: 1st July 2007. Contact: Frederic Blanqui (http://www.loria.fr/~blanqui/) More information about INRIA post-doctoral positions: http://www.inria.fr/travailler/opportunites/postdoc/postdoc.en.html