Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The problem of defining and checking a subtype relation beten recursive types was studied in Armadio and Cardelli (1993) for a first order type system, but for second order systems, which combine subtyping and parametric polymorphism, only negative results are known.  studies the problem of subtype checking for recursive types in system kernel Fun, a typed /spl lambda/-calculus with subtyping and bounded second order polymorphism. Along the lines of Armadio and Cardelli (1993),  study the definition of a subtype relation over kernel Fun recursive types, and then  present a subtyping algorithm which is sound and complete with respect to this relation.  show that the natural extension of the techniques introduced in Armadio and Cardelli (1993) to compare first order recursive types gives a non complete algorithm.  prove the completeness and correctness of a different algorithm, which also admits an efficient implementation.
['Dario Colazzo', 'Giorgio Ghelli']
I am writing a research paper on a idea Subtyping recursive types in kernel Fun
[{"from": "human", "value": "I am writing a research paper on a idea Subtyping recursive types in kernel Fun"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The problem of defining and checking a subtype relation beten recursive types was studied in Armadio and Cardelli (1993) for a first order type system, but for second order systems, which combine subtyping and parametric polymorphism, only negative results are known.  studies the problem of subtype checking for recursive types in system kernel Fun, a typed /spl lambda/-calculus with subtyping and bounded second order polymorphism. Along the lines of Armadio and Cardelli (1993),  study the definition of a subtype relation over kernel Fun recursive types, and then  present a subtyping algorithm which is sound and complete with respect to this relation.  show that the natural extension of the techniques introduced in Armadio and Cardelli (1993) to compare first order recursive types gives a non complete algorithm.  prove the completeness and correctness of a different algorithm, which also admits an efficient implementation."}]