共查询到20条相似文献,搜索用时 46 毫秒
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讨论三类整数列,这些数列的后项均是由前项与非整数乘积再取整后得到的,对应的取整函数分别为四舍五入取整函数、下取整函数、上取整函数.结果表明这三类整数列均为二阶线性递归数列. 相似文献
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This paper is contributed to the combinatorial properties of the MSS sequences, which are the periodic kneading words of quadratic maps defined on a interval. An explicit expression of adjacency relations on MSS sequences of given lengths is established. 相似文献
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王茶香 《数学的实践与认识》2011,41(3)
研究了损益矩阵为区间数的不确定型指派问题,给出了区间数关联度的计算公式,提出了一种基于区间数关联度的区间信息指派方法,最后通过实例验证了该方法的实用性和有效性. 相似文献
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Zsolt Lengvarszky 《Discrete Mathematics》2009,309(12):4171-4175
We consider the problem of how the assembly process of an origami model, made up of similar pieces, can be completed given that at each step there are several choices. A result is given in the language of graphs that provides a sufficient condition under which assembly of the model will never fail. 相似文献
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极限论是微积分中基础和重要的概念.数列极限的迫敛性定理既能判断数列的收敛性,也给出其极限值。通过对数列极限迫敛性定理的条件加以改进,得到了它的推论,并用一个例子说明了该推论的应用。 相似文献
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循环差幂积的不等式 总被引:1,自引:0,他引:1
丁勇 《数学的实践与认识》2001,31(6):750-752
对正数序列给出了循环差幂积的定义 ,讨论了单调序列循环差幂积的有关性质及不等式 相似文献
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研究一类正项数列{n√an},给出其一系列不等式,改进和推广了Minc—Sathre不等式及现有的结果. 相似文献
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P. Acosta A. Bassa A. Chaikin A. Riehl A. Tingstad L. Zhao D. J. Kleitman 《Journal of Graph Theory》2003,44(3):215-230
The following conjecture of Brualdi and Shen is proven in this paper: let n be partitioned into natural numbers no one of which is greater than (n + 1) / 2. Then, given any sequence of wins for the players of some tournament among n players, there is a partition of the players into blocks with cardinalities given by those numbers, and a tournament with the given sequence of wins, that is transitive on the players within each block. © 2003 Wiley Periodicals, Inc. J Graph Theory 44: 215–230, 2003 相似文献
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This paper is contributed to the combinatorial properties of the periodic kneading words of antisymmetric cubic maps defined on a interval. The least words of given lengths, the adjacency relations on the words of given lengths and the parity-alternative property in some sets of such words are established. 相似文献
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对于给定的图H,如果可图序列π有一个实现包含H作为子图,则称π是蕴含H-可图的.本文给出了可图序列π蕴含W_6-可图的一个充分条件,其中W_r是r个顶点的轮图. 相似文献
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By using a combinatorial method it is shown that for every finite pattern, the distribution of the waiting time for the reversed pattern coincides with that of the waiting time for the original pattern in a multi-state dependent sequence with a certain type of exchangeability. The number of the typical sequences until the occurrence of a given pattern and that of the typical sequences until the occurrence of the reversed pattern are shown to be equal. Further, the corresponding results for the waiting time for the r-th occurrence of the pattern, and for the number of occurrences of a specified pattern in n trials are also studied. Illustrative examples based on urn models are also given. 相似文献
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李忠 《中国科学A辑(英文版)》2001,44(8):969-979
Let T(S) be a Teichmüller space of a hyperbolic Riemann surface S, viewed as a set of Teichmüller equivalence classes of Beltrami
differentials on S. It is shown in this paper that for any extremal Beltrami differential μ0 at a given point τ of T(S), there is a Hamilton sequence for μ0 formed by Strebel differentials in a natural way. Especially, such a kind of Hamilton sequence possesses some special properties.
As applications, some results on point shift differentials are given. 相似文献
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S. G. Foss 《Queueing Systems》1992,12(3-4):287-295
The ergodicity criterion for stochastically recursive sequences is given in terms of imbedded subsequences. Several examples are considered. 相似文献
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The distribution of the distance between two (or more) successive occurrences of a specific word in a random sequence of letters is known under different models. In this paper, a more general problem is studied: the distribution of the distance between two (or more) successive occurrences of any word of a given set under a Markov model for the sequence. The generating function and a recurrence for obtaining the probabilities are given. These results are applied to study the distribution of the "CHI" motif in the genome sequence of Haemophilus influenzae. 相似文献
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