kkk 人ç®ã¾ã§ç¡æ¡ä»¶ã§æãï¼k+1k+1k+1 人ç®ä»¥éã§ãä»ã¾ã§ã§ä¸çªãã人ããç¾ããã交éããï¼ã¨ããã¿ã¤ãã®æ¦ç¥ï¼æ¦ç¥ SkS_kSkâ ã¨å¼ã¶ï¼ãåããã¨ã«ãã¾ããç´æçã«èªç¶ãªæ¦ç¥ã§ãã kkk ãã©ã®ããã«å®ããã°ããããèãã¾ãã ttt 人ç®ã«ä¸çªå¥½ããªäººããã確ç㯠1n\dfrac{1}{n}n1âï¼ãã®ã¨ãæ¦ç¥ SkS_kSkâ 㧠ttt 人ç®ã®äººãé¸ã¹ã確çã¯ï¼ tâ¤kt\leq ktâ¤k ã®ã¨ã 000 t>kt> kt>k ã®ã¨ã ktâ1\dfrac{k}{t-1}tâ1kâ ï¼ãæåã® tâ1t-1tâ1 人ã®ä¸ã§ä¸çªå¥½ããªäººããå é kkk 人ã®ä¸ã«ããªãã¨ï¼ãã®äººã¨äº¤éãã¦ãã¾ããå ¨ä½ã®ä¸ã§ä¸çªå¥½ããªäººãã¾ã§ãã©ãã¤ããªãï¼ ãã£ã¦ï¼æåãã確ç㯠1nât=k+1nktâ1=kn(1k+1k+1+â¯+1nâ1)\dfrac{1}{n}\displa
{{#tags}}- {{label}}
{{/tags}}