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Issues concerning the implementation of a notion of modules in the higher-order logic programming language λProlog are examined. A program in this language is a composite of type declarations and procedure definitions. The module construct that is considered permits large collections of such declarations and definitions to be decomposed into smaller units. Mechanisms are provided for controlling the...
A notation for lambda terms is described that is useful in contexts where the intensions of these terms need to be manipulated. The scheme of de Bruijn is used for eliminating variable names, thus obviating α-conversion in comparing terms. A category of terms is provided that can encode other terms together with substitutions to be performed on them. The notion of an environment is used to realize...
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