All finite symmetry Boolean algebra are set algebra of a certain set X, Which has a doubly mapping.

有限的对称布尔代数都是某个带有一个对合映射的集合x上的集合代数。

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Does it exist that there is an extremely not BCI-Subodinate to BCH-Algebra. As a result, it is the conclusion that the finite BCI-Algebra discussed in (2) is nothing but odd Nil-radical.

是否存在极不bci的BCH -代数给出了答案，同时得到一个结论：对在(2)中所讨论的有限bci -代数，均是奇诣零代数。

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Lie's Theory Within the framework of Lie' Theory, we associate infinitesimal transformations making up a Lie algebra with finite operations which are obtained from the previous ones by exponentiation.

另外，群体特性通过微分运算及其逆运算所得到的李代数的代数结构而得到了解释。

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