ãã®è¨äºã¯æ¤è¨¼å¯è½ãªåèæç®ãåºå ¸ãå ¨ã示ããã¦ããªãããä¸ååã§ãã åºå ¸ã追å ãã¦è¨äºã®ä¿¡é ¼æ§åä¸ã«ãååãã ãããï¼ãã®ãã³ãã¬ã¼ãã®ä½¿ãæ¹ï¼ åºå ¸æ¤ç´¢?: "ãã»ã¢ã«ã¬ã³ã®æ³å" â ãã¥ã¼ã¹Â · æ¸ç±Â · ã¹ã«ã©ã¼Â · CiNii · J-STAGE · NDL · dlib.jp · ã¸ã£ãã³ãµã¼ã · TWL (2018å¹´6æ) ãã»ã¢ã«ã¬ã³ã®æ³åã®ãã³å³ã«ãã表ç¾ãå³1ãå³2ã®ããããã®å ´åã«ããã¦ãçå¼ã®ä¸¡è¾ºã®éåã¯éãé åã§å³ç¤ºãããã ãã»ã¢ã«ã¬ã³ã®æ³åï¼ãã»ã¢ã«ã¬ã³ã®ã»ããããè±: De Morgan's lawsï¼ã¯ããã¼ã«è«çãéåã®ä»£æ°å¦ã«ããã¦ãè«çåã¨è«çç©ã¨å¦å®ï¼éåã®ãã¨ã°ã§ã¯ãåéåã¨å ±éé¨åã¨å·®éåï¼ã®éã«æãç«ã¤è¦åæ§ã§ãããååã¯æ°å¦è ãªã¼ã¬ã¹ã¿ã¹ã»ãã»ã¢ã«ã¬ã³ï¼Augustus de Morgan, 1806â1871ï¼ã«ã¡ãªãã ãã®è¦åæ§
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