特集 依頼論文
帰納型消去規則としてのウィトゲンシュタインの一意性規則
―算術の論理からの分離の文脈で―
2021 年 53 巻 2 号 p. 95-114
詳細
2021 年 53 巻 2 号 p. 95-114
We discuss the equational representations of the elimination rule of inductive types, with a focus on the type “natural number”, in the context of the series of approaches to separating an equational calculus from logic. We go back to a source of the purely equational representation of the elimination rule, Wittgenstein's uniqueness rule. We analyze Wittgenstein's argument, in comparison with others', which gives supplementary remarks to Marion-Okada (2018).
