| Some New Combinatorial Conditions on the Singular Fibre of a Fibration |
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| 作者单位： | Department of Mathematics，Shanghai Normal University，Shanghai，200234 |
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| 摘 要： | Ｓｏｍｅ Ｎｅｗ Ｃｏｍｂｉｎａｔｏｒｉａｌ Ｃｏｎｄｉｔｉｏｎｓ ｏｎ ｔｈｅ Ｓｉｎｇｕｌａｒ Ｆｉｂｒｅ ｏｆ ａ ＦｉｂｒａｔｉｏｎＴａｎｇＭｉｎｇｙｙｕａｎ（唐明元）（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＳｈａｎｇｈａｉＮｏｒｍ...
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Some New Combinatorial Conditions on the Singular Fibre of a Fibration |
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| Authors: | Tang Mingyyuan |
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| Abstract: | For any relative minimal fibration of gender g, we have known some basic combinatorialproperties, i. e, the necessary conditions (1)-(5) in this paper. Xiao1] showed that these conditionsare not sufficient for g>2 and gave another two nccry conditions. In this peper, we use themethed of the Stable Reduction and the roemann-Hurtvitz formula to obtain some new combinatorialconditions. These resultS are reduced to three propeitions. |
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| Keywords: | Fibration Singular Fibre Base Extension Principal component |
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