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凹函数的共轭
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作者 刘自新 张成 刚家泰 《大连大学学报》 2004年第4期6-9,18,共5页
在数学规划的对偶理论中,函数及其共轭函数在解决某些实际问题时发挥着重要的作用,利用二者的关系,我们可以把涉及某一函数的问题转化为与其共轭函数有关的对偶问题加以解决.有关凸函数及其共轭函数的理论,在文献[3]中有较为详尽的论述... 在数学规划的对偶理论中,函数及其共轭函数在解决某些实际问题时发挥着重要的作用,利用二者的关系,我们可以把涉及某一函数的问题转化为与其共轭函数有关的对偶问题加以解决.有关凸函数及其共轭函数的理论,在文献[3]中有较为详尽的论述,本文着重介绍凹函数及其共轭函数的相关理论,这些理论在对偶凸规划中同样发挥着重要作用. 展开更多
关键词 凹函数 共轭函数 对偶理论 共轭集 凸规划
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Julia sets of semi-conjugated transcendental entire functions
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作者 王小灵 孙朗伟 +1 位作者 杨德贵 鲍远圣 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第3期383-385,共3页
Suppose that f and g are two transcendental entire functions, and h is a non-constant periodic entire function. We denote the Julia set and Fatou set off by J(f) and F(f), respectively, lffand g are semiconjugated... Suppose that f and g are two transcendental entire functions, and h is a non-constant periodic entire function. We denote the Julia set and Fatou set off by J(f) and F(f), respectively, lffand g are semiconjugated, that is, h · f = g · h, in this paper, we will show that z ∈ J(f) if and only if h(z) ∈ J(g) ( similarly, z F(f) if and only ifh(z) ∈ F(g)), and this extends a result of Bergweiler. 展开更多
关键词 Fatou component Julia set transcendental entire functions
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GLOBAL CONVERGENCE PROPERTIES OF THREE-TERM CONJUGATE GRADIENT METHOD WITH NEW-TYPE LINE SEARCH 被引量:13
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作者 WANGChangyu DUShouqiang CHENYuanyuan 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2004年第3期412-420,共9页
In this paper, a new Wolfe-type line search and a new Armijo-type line searchare proposed, and some global convergence properties of a three-term conjugate gradient method withthe two line searches are proved.
关键词 unconstrained optimization line search three-term conjugate gradientmethod global convergence
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A CLOSEDNESS CRITERION FOR THEDIFFERENCE OF TWO CLOSED CONVEXSETS IN GENERAL BANACH SPACES
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作者 ANNEBEAULIEU ZHOUFENG 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 1999年第3期337-340,共4页
The authors give some sufficient conditions for the difference of two closed convex sets to be closed in general Banach spaces, not necessarily reflexive.
关键词 Asymptotic cone Conjugate convex function Closedness Infimal Convolution
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