
[理工] [離散] 反身性 看不懂 …

請問一下…
反身性是什麼意思……?
(1) 上面寫得 因為 我真的看不懂…
他是說這樣嗎
因為 n可以整除x-x
所以 R具有反身性…??
真的不是很懂…@@
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