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E-凸函数的一些新性质(英文) 被引量:1
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作者 周密 《海南师范大学学报(自然科学版)》 CAS 2012年第1期5-8,共4页
文献[1]中Youness提出一类E-凸集和一类E-凸函数,削弱了已有的凸集和凸函数.文献[2]中Duca和Luspa利用两种上方图的概念(epiE(f)和epiE(f)),给出了E-凸函数的一些性质.本文在较弱的凸性条件上,利用文献[3]所得结论给出了E-凸函数的一些... 文献[1]中Youness提出一类E-凸集和一类E-凸函数,削弱了已有的凸集和凸函数.文献[2]中Duca和Luspa利用两种上方图的概念(epiE(f)和epiE(f)),给出了E-凸函数的一些性质.本文在较弱的凸性条件上,利用文献[3]所得结论给出了E-凸函数的一些新性质. 展开更多
关键词 E-凸集 E-凸函数 几乎凸集 上方图 松驰2-凸集
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E-凸函数的一些性质
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作者 余龙英 《韶关学院学报》 2004年第9期3-5,共3页
修正了E.A.Youness提出的结论,并据此把凸函数的一些性质推广到E 凸函数.
关键词 E-凸集 E-凸函数 E-上方图
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西藏铜币综述 被引量:2
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作者 王麟 马桂田 《青海金融》 1996年第9期26-27,49,共3页
关键词 铜币 藏历 西藏地区 上方图 民族特色 标记符号 币名 铸造工艺 太极阴阳
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Lexis in Dionysius the Areopagite
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作者 Jose Maria Nieva 《Journal of Literature and Art Studies》 2014年第2期129-136,共8页
In his Commentary on Plato's Phaedo, Damascius establishes a close relation between destination (lexis), divine Justice, and life dignity (kat'aian) of every soul. Among several meanings of destination, the most... In his Commentary on Plato's Phaedo, Damascius establishes a close relation between destination (lexis), divine Justice, and life dignity (kat'aian) of every soul. Among several meanings of destination, the most relevant one is related to the condition of the soul after death. Consequently, the purpose of this paper is to consider how this neoplatonic term is conceived in Dionysius Areopagite. For that purpose, the author will analyze such term widely used in the chapter 7 of Ecclesiastic Hierarchy in which Dionysius deals with the funerary rite and in which the notes of the dionysian eschatology are found. In other words, Dionysius' use of this term combines a spiritual and a metaphysic perspective. The former is part of the representation of the dionysian universe in which even the angels receive the name of lexeis and are distinguished by their never ending movement around the Thearchia; the latter is present among humans as a call to imitate such angelic condition. Such imitation is not possible without the effort needed to behave in agreement with an honorable lifestyle (kat'axian, neoplatonic expression also used by Dionysius) that opens the door to a condition or rank granted to man after death. 展开更多
关键词 NEOPLATONISM DESTINATION dionysian eschatology
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An Upper Bound for the Cubicity of Folded Hypercube
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作者 Changqing Liu Hongmei Li Lei Ma 《Journal of Systems Science and Information》 2009年第4期295-301,共7页
For a graph, its boxicity is the minimum dimension k such that G is representable as the intersection graph of axis-parallel boxes'in the k-dimension space. When the boxes are restricted to be axis-parallel k-dimensi... For a graph, its boxicity is the minimum dimension k such that G is representable as the intersection graph of axis-parallel boxes'in the k-dimension space. When the boxes are restricted to be axis-parallel k-dimension cube's, the minimum k required to represent G is called the cubicity of G. In this paper, a special graph .called unit-interval graph. IG[X, Y] is given, then 2n such graphs which have the same vertices as V(FQn) are constructed, where FQ, is the n-dimension folded hypercube. Thanks to the specia] structure of IG[X, Y], the result that cubicity(FQn)≤ 2n is proved. 展开更多
关键词 BOXICITY cubicity folded hypercube unit-interval graph
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