Term Graphs and Principal Types for X

نویسندگان

  • Steffen van Bakel
  • Jayshan Raghunandan
  • Alexander Summers
چکیده

In this paper we study the calculus of circuits X , as first presented in [13] and studied in detail in [5]. We will present a number of new implementations of X using term graph rewriting techniques, which are improvements of the technique used in [6]. We will show that alpha conversion can be dealt with ‘on the fly’, and that explicit copying can be avoided, by presenting, discussing and comparing a number of solutions to these problems. We will define a notion of type assignment on circuits by labelling input and output connectors with types. This notion is then used to define a non-standard notion of type assignment on term graph rewriting. We will show that this system has a principal type property.

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تاریخ انتشار 2004