Abstract
This work describes the proof and uses of a theorem allowing definition of recursive functions over the type of λ-calculus terms, where terms with bound variables are identified up to α-equivalence. The theorem embodies what is effectively a principle of primitive recursion, and the analogues of this theorem for other types with binders are clear. The theorem’s side-conditions require that the putative definition be well-behaved with respect to fresh name generation and name permutation. A number of examples over the type of λ-calculus terms illustrate the use of the new principle.
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Norrish, M. (2004). Recursive Function Definition for Types with Binders. In: Slind, K., Bunker, A., Gopalakrishnan, G. (eds) Theorem Proving in Higher Order Logics. TPHOLs 2004. Lecture Notes in Computer Science, vol 3223. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30142-4_18
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DOI: https://doi.org/10.1007/978-3-540-30142-4_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-23017-5
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