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Power-substitution,exchange rings and unit II-regularity |
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| Authors: | Huanyin Chen |
| Institution: | Department of Mathematics , Hunan Normal University , Changsha, PR, 410006, China E-mail: chyzxl@sparc2.hunnu.edu.en |
| Abstract: | In this paper,we investigate power-substitution over exchange rings.We show that an exchange ring R satisfies power-substitution if and only if for any regular x ∈ R, there exists a positive integer n such that xI n is unit πregular in M n(R). |
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