ããã³ãã¯éææè¿ ã³ã¡ã³ããæè¿ Coqãä¸è¡ã§ Coqã¯ããã°ã©ãã³ã°è¨èª(é¢æ°åè¨èª) Coqã¯ä»æ§ãæ¸ãã¦è¨¼æã§ããè¨èª ã¤ã¾ãä»æ§ã証æãããããã°ã©ãã³ã°ãããã Coqã¯ããã°ã©ãã³ã°è¨èª ãã¨ãã°ãããªã Fixpoint map{A B:Type}(f: A->B)(xs: list A):= match xs with | [] => [] | x :: xs => f x :: map f xs end.
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