| ON THE DIFFERENTIABILITY OF THE PARITY PROGRESSIVE POPULATION SEMIGROUP |
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| 作者姓名： | SHI DEMING AND YANG LUSHAN |
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| 作者单位： | SHI DEMING AND YANG LUSHAN(Department of Mathematics，Zhengzhou University，Zhengzhou 450052)(Department of Information Study，Institute of Information Engineering，Zhengzhou 450002) |
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| 摘 要： | ＯＮＴＨＥＤＩＦＦＥＲＥＮＴＩＡＢＩＬＩＴＹＯＦＴＨＥＰＡＲＩＴＹＰＲＯＧＲＥＳＳＩＶＥＰＯＰＵＬＡＴＩＯＮＳＥＭＩＧＲＯＵＰ￥ＳＨＩＤＥＭＩＮＧＡＮＤＹＡＮＧＬＵＳＨＡＮ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅ...
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| 收稿时间： | 6 July 1991 |
ON THE DIFFERENTIABILITY OF THE PARITY PROGRESSIVE POPULATION SEMIGROUP |
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| SHI DEMING AND YANG LUSHAN.ON THE DIFFERENTIABILITY OF THE PARITY PROGRESSIVE POPULATION SEMIGROUP[J].Applied Mathematics A Journal of Chinese Universities,1994,9(3):223-230. |
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| Authors: | SHI DEMING AND YANG LUSHAN |
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| Institution: | (1) Department of Mathematics, Zhengzhou University, 450052 Zhengzhou;(2) Department of Information Study, Institute of Information Engineering, 450002 Zhengzhou |
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| Abstract: | We are concerned with the differentiability of the parity progressive population semigroup under certain weak assumptions.
We prove by studying the properties of the spectrum of the parity progressive operator of population that there existst
0>0 such that the parity progressive population semigroup {T(t): t≥0} is differentiable ift>t
0 |
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| Keywords: | Parity progression differentiable semigroup |
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