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设(M;H_1,H_2;F_0)为带边3-流形M的一个SD-分解.称该分解为可约的(或弱可约的)若存在本质圆片D_1■H)_1,D_2■H_2使得■D_1,■D_2■F_0并且■D_1=■D_2(或■D_1∩■D_2=■).称(M;H_1,H_2;F_0)为内亏格1若F_0为穿孔环面.本文主要结果:一个弱可约的内亏格1的SD-分解或是可约的或是双经的. 相似文献
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In this paper, we fix the genus of SD-splittings of a compression body. We also discuss the uniqueness for minimal D-splittings and SD-splittings for a han-dlebody. 相似文献
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Feng Chun LEI Yang LI 《数学学报(英文版)》2006,22(5):1481-1484
In the present paper, we characterize the bordered 3-manifolds with genus 1 D-splittings and SD-splittings. We also describe a minimal genus SD-splitting for a handlebody and surface × I. 相似文献
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