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The Inhabitation Problem for Rank Two Intersection Types

Dariusz Kusmierek
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Abstract

We prove that the inhabitation problem for rank two intersection types is decidable, but (contrary to common belief) EXPTIME-hard. The exponential time hardness is shown by reduction from the in-place acceptance problem for alternating Turing machines.

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Dariusz Kusmierek. 2007-01-05. The Inhabitation Problem for Rank Two Intersection Types. https://arxiv.org/abs/cs/0701029

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