拟群 Quasigroup
（重定向自Quasigroups）
在数学中，特别是抽象代数里，拟群是一种类似于群的代数结构。拟群与群的相像之处是也能够进行除法运算，但拟群中并没有群所拥有的结合律。有单比特的拟群称作幺拟群或者圈（loop）。
Quasigroups
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Quasigroup 拟群
（重定向自Quasigroups）
![Algebraic structures between magmas and groups.](/Images/godic/202502/05/Magma_to_group2.svg3510.png")
In mathematics, especially in abstract algebra, a quasigroup is an algebraic structure resembling a group in the sense that "division" is always possible. Quasigroups differ from groups mainly in that they need not be associative.
A quasigroup with an identity element is called a loop.
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