6
1
2017
0

Uyhip2017 May

好久好久没更uyhip辣。这次题目不算难就更一下吧。

题面:对哪些$n$,存在大小为$n$的Abel群$(G,+)$与三个$G\to G$的双射$A,B,C$,使得$\forall x\in G$,$A(x)+B(x)=C(x)$?如果不要求$G$是Abel群,只要求$G$是群呢?

Category: 未分类 | Tags: UyHiP 抽代

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