[離散] 兩題Relations
How many relations are there on a set with n
elements that are
b)anti-symmetric
c)asymmetric
答案分別是
2^n*3^((n)(n-1)/2)
3^(n(n-1)/2)
實在是不懂為什麼要用3當底數
麻煩神手解答 謝謝
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06/13 11:49, , 1F
06/13 11:49, 1F