On Henk Barendregt’s Favorite Open Problem
نویسندگان
چکیده
H is the λ-theory extending β-conversion by identifying all closed unsolvables. A long-standing open problem of H. Barendregt states that the range property holds in H. Here we discuss what we know about the problem. We also make some remarks on the λ-theory Hω (the closure of H under the ω-rule and β-conversion).
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