共查询到17条相似文献,搜索用时 97 毫秒
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罗佑新 《数学的实践与认识》2004,34(4):99-103
在概述泛灰数的概念与泛灰行列式运算的基础上 ,介绍了泛灰线性方法程组的泛灰解法 .由于泛灰行列式运算复杂 ,根据泛灰的性质 ,提出了泛灰线性方程组的白化解法 .理论证明这种求解方法的正确性 .并给出了算例 . 相似文献
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在概述泛灰数的概念及其运算规则的基础上 ,介绍了泛灰数与区间数的转化 ,利用泛灰数的可扩展性对区间进行分析 ,它不仅具有区间分析的功能 ,而且能解决区间分析所不能解决的问题 .并给出了算例作了对比分析 相似文献
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区间数的标准表示及其四则运算法则与泛灰数的内在联系 总被引:2,自引:0,他引:2
在回顾泛灰数四则运算法则基础上,给出了区间数的标准表示,论述了标准区间数的四则运算法则与泛灰数的内在联系及其应用前景. 相似文献
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针对方案指标值为三参数区间灰数的多指标决策问题,提出一种基于灰关联熵的多指标灰靶决策方法.首先定义了各方案的正靶心及正靶心距;其次,构建所有方案的相对关联度系数,继而形成灰关联系数矩阵,再利用熵理论求解目标权重.应用实例说明了提出的决策方法的合理性和有效性. 相似文献
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给出了泛正定矩阵的重要性质与充要条件.进而提出了新的泛正定与泛非负定矩阵子集类的定义.在其基础上给出泛正定子集类的一系列性质,尤其是推广了Minkowski不等式.最后讨论了泛非负定子集类上的一种新的矩阵偏序的性质与充要条件. 相似文献
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基于泛性模糊数的VIKOR方法研究 总被引:2,自引:0,他引:2
建立了一种泛性模糊数可比较的度量,对决策信息通常为泛性模糊数的决策问题进行加工和扩展,提出了基于泛性模糊数不确定信息的VIKOR决策方法,实现了属性为泛性模糊数的多属性群决策及信息融合的目的. 相似文献
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针对敌机在某一时刻其状态属性特征具有迷惑性的特点将某时间段敌机的特征指标变化序列用区间数表示,然后将敌机各类战术意图基准特征值也用区间数表示,将两类区间数都进行规范化处理,求得目标特征区间值与各类意图基准特征区间值的距离矩阵,用AHP方法确定特征指标权重,然后提出了一个新的灰关联模型并对其满足灰关联四公理进行了证明,用提出的灰关联度模型对目标战术意图进行识别.仿真结果证明区间灰关联度方法用于飞机战术意图识别的有效性,同时可以发现其在实时性方面的优势. 相似文献
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通过构建一个简单的模型分析了普遍服务约束下的垄断产业在引入竞争后的市场竞争,模型很好地展现了垄断产业引入竞争后所出现的“撇脂现象”.通过分析得出:引入竞争后,在位者的盈利和亏损同时减少,但盈利减少得更多;竞争对消费者总体上是有利的,但竞争的好处更多地被低成本的城市消费者所获得,高成本的农村消费者则没有分享到改革的成果;... 相似文献
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从集合概念的内涵出发,剖析了单值集——Cantor集合、Fuzzy集合、Rough集合、可拓集合概念的内涵;剖析了复值集——Grey集合、未确知集合、Vague集合、泛灰(UG)集合和广义泛灰(GUG)集合的内涵;从而得出广义泛灰集合是内涵最深的集合概念;它具有极强的描述能力,可以描述客观存在的一切现象,故又是外延最广的集合概念. 相似文献
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We give criteria when a full subcategory D of the category of groups has C-universal factorization property (C-UFP) or C-strong universal factorization property(C-SUFP) for a certain category of groups C.As a byproduct,we give affirmative answers to three unsettled questions in[S.W.Kim,J.B.Lee,Universal factorization property of certain polycyclic groups,J.Pure Appl.Algebra 204 (2006) 555-567]. 相似文献
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In this work, we have established universal similarity factorization equalities over the commutative quaternions and their matrices. Based on these equalities, real matrix representations of commutative quaternions and their matrices have been derived, and their algebraic properties and fundamental equations have been determined. Moreover, illustrative examples are provided to support our results. 相似文献
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Vladimir L. Vasyukov 《Logica Universalis》2007,1(2):277-294
How, why and what for we should combine logics is perfectly well explained in a number of works concerning this issue. But
the interesting question seems to be the nature and the structure of the general universe of possible combinations of logical
systems. Adopting the point of view of universal logic in the paper the categorical constructions are introduced which along
with the coproducts underlying the fibring of logics describe the inner structure of the category of logical systems. It is
shown that categorically the universe of universal logic turns out to be a topos and a paraconsistent complement topos.
This work was supported by Russian Foundation for Humanities via the Project ”The structure of Universal Logics”, grant No
06-03-00195a. 相似文献
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《Chaos, solitons, and fractals》1999,10(6):953-973
Complexity studies are burgeoning into an ever-increasing number of fields. This paper seeks to abstract from a large number of non-biological complexity areas some exemplar common thread representative of many complexity areas. One such common thread is identified, a thread leading immediately to the notion of Universal Library, as an additional complexity area, containing all possible texts and, correspondingly, encompassing all possible knowledge (amidst, naturally, a welter of partially and wholly senseless texts). This notion is then wedded to an elementary portion of number theory, to indicate where replicas of universal libraries exist and with what certain attributes. Next, a representative example of a biological complexity area—DNA sequences—is introduced. While DNA is often casually termed a library specifying the heritability machinery of individuals and species, this paper briefly explores whether explicit relations exist between DNA sequences and universal libraries, to help test, inter alia, the strength of the initially identified complexity thread to link non-biological and biological complexity areas. This theme of common linking threads has many interesting open research issues. 相似文献