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ICFP
2004
ACM
14 years 7 months ago
Numbering matters: first-order canonical forms for second-order recursive types
We study a type system equipped with universal types and equirecursive types, which we refer to as F?. We show that type equality may be decided in time O(n log n), an improvement...
François Pottier, Nadji Gauthier
RC
2002
96views more  RC 2002»
13 years 7 months ago
Verification of Invertibility of Complicated Functions over Large Domains
A new method to decide the invertibility of a given high-dimensional function over a domain is presented. The problem arises in the field of verified solution of differential algeb...
Jens Hoefkens, Martin Berz
LPAR
2010
Springer
13 years 5 months ago
Logic and Computation in a Lambda Calculus with Intersection and Union Types
We present an explicitly typed lambda calculus "`a la Church" based on the union and intersection types discipline; this system is the counterpart of the standard type a...
Daniel J. Dougherty, Luigi Liquori
CCL
1994
Springer
13 years 11 months ago
On Modularity in Term Rewriting and Narrowing
We introduce a modular property of equational proofs, called modularity of normalization, for the union of term rewrite systems with shared symbols. The idea is, that every normali...
Christian Prehofer
SIAMCOMP
2008
86views more  SIAMCOMP 2008»
13 years 7 months ago
The Complexity of Monadic Second-Order Unification
Abstract. Monadic second-order unification is second-order unification where all function constants occurring in the equations are unary. Here we prove that the problem of deciding...
Jordi Levy, Manfred Schmidt-Schauß, Mateu Vi...