本文的目的是证明关于结合环可换性的三个定理。

The object of this paper is to prove three theorems of associated ring's commutativity.

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本文主要对几乎可换环上酉群的基本子群的正规性进行了研究。

This thesis mainly works on the normality of elementary subgroup of Unitary group over almost commutative rings.

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本文给出了BCH—代数与非负BCH—代数的并代数的概念，并且讨论了拟可换性。

This paper introduced the concept of a union algebra of BCH-algeba and non-negetive BCH-algebra, and discussed quasi-commutativity of (HP) Union algebra.

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