Last Updated
：2025/11/30
eta conversion
Noun
Japanese Meaning
ラムダ計算における書き換えルールの一つ。具体的には、（𝜆x.(fx)) の形のラムダ抽象が、もし x が f に自由に現れなければ、単に f に変換できるという性質を持つ。
Sense（1）
（ plural ）
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(computing theory) One of the three rewrite rules of lambda calculus, which expresses a sort of tautology about function application. The rule says that a lambda abstraction of the form (𝜆x.(fx)) may be rewritten as simply f, provided that x does not occur freely in f (considered by itself).
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eta conversion
Understanding eta conversion is essential for optimizing compilers that manipulate lambda expressions.
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Understanding eta conversion is essential for optimizing compilers that manipulate lambda expressions.
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