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有亏格为1的Heegaard分解的三维流形中的环面纽结
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作者 徐妍 雷逢春 +1 位作者 李风玲 梁良 《数学年刊(A辑)》 CSCD 北大核心 2024年第1期1-14,共14页
将存在亏格为1的Heegaard分解T’_(1)∪F T’_(2)的三维流形记为M=L(p,q),其中p和q是互素整数,q/p为T’_(2)的纬线在T’_(1)上的斜率.若环面F上的简单闭曲线γ在M中非平凡,则称γ是M中的环面纽结.本文对在M中沿环面纽结作m/n-Dehn手术... 将存在亏格为1的Heegaard分解T’_(1)∪F T’_(2)的三维流形记为M=L(p,q),其中p和q是互素整数,q/p为T’_(2)的纬线在T’_(1)上的斜率.若环面F上的简单闭曲线γ在M中非平凡,则称γ是M中的环面纽结.本文对在M中沿环面纽结作m/n-Dehn手术所得流形进行了分类,并给出了两个实心环体沿边界上平环作融合所得流形是L(p,q)中环面纽结补的特征描述. 展开更多
关键词 h’-分解 透镜空间 环面纽结 Seifert流形
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The H-stability of the Solution for Infinite Delay Functional Differential Equation
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作者 李晓爱 尚德庆 《Chinese Quarterly Journal of Mathematics》 CSCD 1998年第4期94-98, ,共5页
H stability is a new and important concept. In this paper,we discuss the equationx(t)=-a(t)x(t)+∫ t -∞ k(t,s-t,x(s)) d sand we gain a new decision theorem. Using this decision theorem,we obtained a very extensive re... H stability is a new and important concept. In this paper,we discuss the equationx(t)=-a(t)x(t)+∫ t -∞ k(t,s-t,x(s)) d sand we gain a new decision theorem. Using this decision theorem,we obtained a very extensive result of the H uniformly asymptotical stability of this equation. That is,eliminating the restriction that a(t) is bounded. 展开更多
关键词 h stability Liapunov functional integral differential equation
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Proximal point algorithm for a new class of fuzzy set-valued variational inclusions with (H,η)-monotone mappings
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作者 李红刚 《Journal of Chongqing University》 CAS 2008年第1期79-84,共6页
We introduced a new class of fuzzy set-valued variational inclusions with (H,η)-monotone mappings. Using the resolvent operator method in Hilbert spaces, we suggested a new proximal point algorithm for finding approx... We introduced a new class of fuzzy set-valued variational inclusions with (H,η)-monotone mappings. Using the resolvent operator method in Hilbert spaces, we suggested a new proximal point algorithm for finding approximate solutions, which strongly converge to the exact solution of a fuzzy set-valued variational inclusion with (H,η)-monotone. The results improved and generalized the general quasi-variational inclusions with fuzzy set-valued mappings proposed by Jin and Tian Jin MM, Perturbed proximal point algorithm for general quasi-variational inclusions with fuzzy set-valued mappings, OR Transactions, 2005, 9(3): 31-38, (In Chinese); Tian YX, Generalized nonlinear implicit quasi-variational inclusions with fuzzy mappings, Computers & Mathematics with Applications, 2001, 42: 101-108. 展开更多
关键词 variational inclusion h η)-monotone mapping resolvent operator technique fuzzy set-valued mapping proximal point algorithm: convergence of numerical methods
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Quasidirect Decompositions of Full Rank Hankel Matrices
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作者 何淦瞳 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2005年第1期47-57,共11页
This paper studies the decomposition of a full rank (rectangular) Hankel matrix into the sum of Hankel matrices whose ranks add up to that of the original matrix.
关键词 hankel matrix h-decomposability quasidirect decomposition
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