“identity function”的概念、定义、翻译、参考文献-科学参考

单词	identity function
释义	identity function Mathematics The identity function i_S: S →S, on a set S, is defined by i_S(s) = s for all s in S. Identity functions have the property that if f: S → T is a function, then f∘i_S = f and i_T∘f = f. Computer A function $I : S \to S$ with the property that $I (s) = s for all s in S$ Such a function leaves every element in its domain unaltered. Identity functions are needed for such purposes as the definition of inverses of functions.
随便看	gills Gill, Sir David gill slit Gilman, Alfred Goodman gilsonite Gilson, Étienne (1884–1978) gilt-edged security gimbal Ginga gingiva Gini coefficient Gini, Corrado (1884–1965) Gini statistic Ginkgoales Ginkgophyta Ginnie Mae GINO–F Giolitti, Giovanni (1842–1928) Giorgi units Giotto gipfelflur giraffe Girard’s theorem giro Girondin

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