Acta Mathematica Scientia (Series B)

**Sponsored by **Wuhan Institute of Physics and

Mathematics, CAS, China

**Edited by ** Editorial Committee of Acta Mathematica

Scientia

** **Add: P. O. Box 71010, Wuhan 430071, China

** **Tel: 086-27-87199087(Series B)

027-87199206(Series A & Series B)

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actams@wipm.ac.cn
**ISSN **0252-9602

**CN **42-1227/O