用泛性质定义了BCI -代数的直积，并证明了直积的存在性和唯一性。
The concept direct products of BCI-Algebra by using the universal property is introduced and uniqueness and existence of direct products of BCI-Alegbra are also proved.
利用主中理想的概念给出了软代数能分解为链直积的一个条件。
In this paper, we introduce concepts of main weak ideal and discuss their basic properties.
利用主中理想的概念给出了软代数能分解为链直积的一个条件。
In this paper, we introduce concepts of main weak ideal and discuss their basic properties.
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