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Andy Pitts (University of Cambridge)
Monday 09 November 2009, 12:45-14:00
Structural recursion with pure local names
- đ¤ Speaker: Andy Pitts (University of Cambridge)
- đ Date & Time: Monday 09 November 2009, 12:45 - 14:00
- đ Venue: Room FW26, Computer Laboratory, William Gates Building
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Sam Staton
Abstract
I will discuss a new recursion principle for inductive data modulo alpha-equivalence of bound names that makes use of Odersky-style, effect-free local names when recursing over bound names. It is inspired by the nominal sets notion of “alpha-structural recursion”. The new approach provides a pure calculus of total functions that still adequately represents alpha-structural recursion while avoiding the need to verify freshness side-conditions in definitions and computations. It arises from a new semantics of Odersky-style local names using nominal sets.
Series This talk is part of the Semantics Lunch (Computer Laboratory) series.
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