先构造交换半环关于其乘法封闭子集的分式半环；

First, semi ring of fractions of a semi ring about a multiplicative closed subset in it is constructed.

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目的研究一类重要的幂等元半环，即乘法带半环。

Aim To study a very important class of idempotent semiring, so-called multiplicative band semirings.

youdao

目的研究一类重要的幂等元半环，即乘法带半环。

Aim To study a very important class of idempotent semiring, so-called multiplicative band semirings.

youdao