Decidability of Higher-Order Unification
As the known decidability results (see Section 2.6) do not cover many practical cases, we examine decidability of higher-order unification more closely, mostly considering the second-order case. An overview of the results and the corresponding sections can be found in Figure 5.1. Notice that the results only hold under the assumption that all conditions in the path to the node hold.
KeywordsFree Variable Induction Scheme Decidable Unification Unification Problem Elimination Problem
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