Membership
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Chinese Math. Society (council 1984-91)
1984 - 1991
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Chinese Automatics Society (council 1984-97)
1984 - 1997
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Guangdong Math. Society (chairman 1990-95)
1990 - 1995
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International Society for Analysis
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its Application and Computation (board directors 1997-2003); Guangdong Math. Society (honorary chairman 1995?Co).
1997 - 2003
