Fabio Alessi, Mariangiola Dezani-Ciancaglini, and Furio Honsell

Inverse limit models as filter models

In Delia Kesner, Femke van Raamsdonk, and J. B. Wells, editors, HOR '04, pages 3-25, Aachen, 2004 RWTH Aachen


Natural intersection type preorders are the type structures which agree with the plain intuition of intersection type constructor as set-theoretic intersection operation and arrow type constructor as set-theoretic function space constructor. In this paper we study the relation between natural intersection type preorders and natural lambda-structures, i.e. omega-algebraic lattices with Galois connections given by F:-> [-> ] and G:[-> ]-> . We prove on one hand that natural intersection type preorders induces natural lambda-structures, on the other hand that natural lambda-structures admits presentations through intersection type preorders. Moreover we give a concise presentations of classical D models of untyped lambda-calculus through suitable natural intersection type preorders and prove that filter models induced by them are isomorphic to D.


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