Abstract
This article presents a formulation of the fan theorem in Martin-Löf’s type theory. Starting from one of the standard versions of the fan theorem we gradually introduce reformulations leading to a final version which is easy to interpret in type theory. Finally we describe a formal proof of that final version of the fan theorem.
Partially developed during the author’s affiliation to Göteborg University, Sweden.
Basic Research in Computer Science, Centre of the Danish National Research Foundation.
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Fridlender, D. (1999). An Interpretation of the Fan Theorem in Type Theory. In: Altenkirch, T., Reus, B., Naraschewski, W. (eds) Types for Proofs and Programs. TYPES 1998. Lecture Notes in Computer Science, vol 1657. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-48167-2_7
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DOI: https://doi.org/10.1007/3-540-48167-2_7
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