正如每个整数都可用一些质数的积表示，任一对象的对称都可由所谓简单群的基本构件集合构造出来。

Much as every integer can be broken down into a product of prime Numbers, the symmetries of any object can be constructed from a collection of basic building blocks known as simple groups.

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它是纯对称的积；因此，它是完全可交换的。

It is the purely symmetric product; therefore, it is completely commutative.

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在域上，开解正交变换表成对称之积，因子个数的多少，是用变换的剩余数来标定的。

On the field, the number of factors in solving the symmetrical product is calibrated by the remainders of the transformation.

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