斐波那契数列研究性学习一例

新教材数学第五册P32阅读材料介绍了斐波那契数列：1，1，2，3，5，8，13，21，34，55，89，…．     

关于阶为2~（α1）3~（α2）5~（α3）7~（α4）p~（α5）的单群

本文证明了以下结果：设α１，α２，α３，α４，α５均为正整数，ｐ为素数且．如果Ｇ是阶为的单群，则Ｇ同构于下列单群之一：Ａ１１，Ａ１２；Ｍ２２，Ｈｉ－Ｓ２ＭｃＬ，Ｈｅ；Ａ１（ｑ）（ｑ＝２６，５３，７４，２９，４１，７１，２５１，４４９，４８０１），Ａ２（３２），Ａ３（２２），Ａ３（７），Ａ４（２），Ａ５（２），Ｂ２（２３），Ｂ２（７２），Ｂ３（３），Ｂ４（２），Ｃ３（３），Ｄ４（３），Ｇ２（２），Ｇ２（５），２Ａ２（１９），２Ａ３（５），２Ａ３（７），２Ａ４（３），２Ａ５（２），２Ｄ４（２）．     

关于丢番图方程x^2±2^m=y^n

本文证明了：方程ｘ２＋２ｍ＝ｙｎ，ｘ，ｙ，ｍ，ｎ∈Ｎ，ｇｃｄ（ｘ，ｙ）＝１，ｎ＞２仅有有限多组解（ｘ，ｙ，ｍ，ｎ），而且当（ｘ，ｙ，ｍ，ｎ）≠（５，３，１，３），（１１，５，２，３），（７，３，５，４）时，ｎ是适合ｎ≡７（ｍｏｄ８）以及２３≤ｎ＜８．５·１０６的奇素数，ｍａｘ（ｘ，ｙ，ｍ）＜Ｃ１；方程ｘ２－２ｍ＝ｙｎ，ｘ，ｙ，ｍ，ｎ∈Ｎ，ｇｃｄ（ｘ，ｙ）＝１，ｙ＞１；ｎ＞２仅有有限多组解（ｘ，ｙ，ｍ，ｎ），而且这些解都满足ｎ＜２·１０９炉以及ｍａｘ（ｘ，ｙ，ｍ）＜Ｃ２，这里Ｃ１，Ｃ２是可有效计算的绝对常数．     

搜索区传递2-（q，4，1）设计

对于区传递但非旗传递的可解2-（q，4，1）设计，Camina指出，当q=13，37，61，109，157，181时有具体的例子，但是否有更多的q产生具体例子有待研究。主要结果：设q是素数幂且q=13（mod24），则对于每个q〈2000，总存在区传递但非旗传递的2-（q，4，1）设计。     

梦游“零王国”

小毅睡得正香，忽然被一阵“零零”的声音吵醒，他翻身起床，往外一看，啊呀，外面黑乎乎的。“零零”的声音越来越响，小毅顺着声音找去，不远处出现了一座巨大的椭圆形宫殿，宫殿里灯火辉煌。小毅连忙伸头往里看，忽然，宫殿里连蹦带跳跑出一个小孩。     

珠韵悠扬 逸趣横生——中国南通珠算博物馆简介

南通，吞江吐海，是长江与大海孕育出的神奇土地。这里，古为崇川福地，五千年的历史舒展成百里长卷。那穿城而过、波光粼粼的濠河水，赋予南通城灵性、生机与活力。泛舟水上，“城在水中坐，人在画中游”；漫步河滨，“烟笼十里柳翠，日照万树红花”。     

排列组合中五类易混淆的问题

排列组合问题求解方法独特，灵活多变，技巧性强．但若审题不严，思考不周密，则很容易出错，有时甚至“差之毫厘，失之千里”，本文通过姊妹型例题的形式列举常见的易混淆的五类似是而非的问题，供同学们参考．     

欢迎加入“探险俱乐部”

欢迎大家来到“探险俱乐部”！喜欢探险的朋友们，走过，路过，不要错过，经常到俱乐部活动活动，吃嘛嘛香，身体倍儿棒，脑筋越来越灵光。     

乘客分流问题

某一居民小区在新建时，每天有10万居民外出，乘坐的交通工具主要有两种类型：一种是公交车，另一种是出租车，通常情况下，当天乘坐公交车的居民，在第二天出行时，仍有95％的居民乘坐公交车，剩下5％的居民将改乘出租车，而当天乘坐出租车的居民，第二天全部改乘公交车，由于小区的规模仍在不断扩大，平均每天将增加105人，     

木耳高产栽培配方的数学模型及优化研究

崔文善，闫培生，张金政．木耳高产栽培配方的数学模型及优化研究．数理统计与管理，１９９７，１６（４），８～１１．本文采用回归正交设计方法，研究了泡桐木屑栽培木耳的配方组合与产量之间关系，并建立了数学模型。结果表明，以泡桐木屑为主料，各组分的适宜用量，以及它们之间合理组合，可显著提高木耳产量，降低生产成本，并具有较好的稳定性；其配方的优化方案为：泡桐木屑７７．６～８０．２％，麦夫１２．５～１４．８％，石灰２．４～２．７％，ＭｇＳＯ４１．３％，ＫＨ２ＰＯ４２．６％，糖１．０％。     

RECENT PROGRESS ON SPHERICAL HARMONIC APPROXIMATION MADE BY BNU RESEARCH GROUP ——In memory of Professor Sun Yongsheng

As early as in 1990, Professor Sun Yongsheng, suggested his students at Beijing Normal University to consider research problems on the unit sphere. Under his guidance and encouragement his students started the research on spherical harmonic analysis and approximation. In this paper, we incompletely introduce the main achievements in this area obtained by our group and relative researchers during recent 5 years （2001-2005）. The main topics are： convergence of Cesaro summability, a.e. and strong summability of Fourier-Laplace series; smoothness and K-functionals; Kolmogorov and linear widths.     

Boundedness for commutators of multipliers on Hardy type spaces

In this paper, we study the commutators generalized by multipliers and a BMO function. Under some assumptions, we establish its boundedness properties from certain atomic Hardy space Hb^p（R^n） into the Lebesgue space L^p with p 〈 1.     

A unified approach to certain problems of best local approximation

In this paper we study best local quasi-rational approximation and best local approximation from finite dimensional subspaces of vectorial functions of several variables. Our approach extends and unifies several problems concerning best local multi-point approximation in different norms.     

Towards Excellence in Science Chinese Academy of Sciences

<正>May 26,2014,Beijing Science is a human enterprise in the pursuit of knowledge.The scientific revolution that occurred in the 17th Century initiated the advances of modern science.The scientific knowledge system created by     

THE 8~(th) INTERNATIONAL CONGRESS ON INDUSTRIAL AND APPLIED MATHEMATICS

<正>August 10-14,2015Beijing,ChinaThe International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists     

Bounds for the zeros of polynomials

Let P(z)=∑↓j=0↑n ajx^j be a polynomial of degree n. In this paper we prove a more general result which interalia improves upon the bounds of a class of polynomials. We also prove a result which includes some extensions and generalizations of Enestrǒm-Kakeya theorem.     

Boundedness of commutators related to Marcinkiewicz integrals on hardy type spaces

In this paper, the authors study the boundedness of the operator [μΩ, b], the commutator generated by a function b ∈ Lipβ(Rn)(0 ＜β≤ 1) and the Marcinkiewicz integrals μΩ, on the classical Hardy spaces and the Herz-type Hardy spaces in the case Ω∈ Lipα(Sn-1)(0 ＜α≤ 1).     

Generalization of the interaction between Haar approximation and polynomial operators to higher order methods

In applications it is useful to compute the local average empirical statistics on u. A very simple relation exists when of a function f（u） of an input u from the local averages are given by a Haar approximation. The question is to know if it holds for higher order approximation methods. To do so, it is necessary to use approximate product operators defined over linear approximation spaces. These products are characterized by a Strang and Fix like condition. An explicit construction of these product operators is exhibited for piecewise polynomial functions, using Hermite interpolation. The averaging relation which holds for the Haar approximation is then recovered when the product is defined by a two point Hermite interpolation.     

Jacobi polynomials used to invert the laplace transform

Given the Laplace transform F(s) of a function f(t), we develop a new algorithm to find an approximation to f(t) by the use of the classical Jacobi polynomials. The main contribution of our work is the development of a new and very effective method to determine the coefficients in the finite series expansion that approximation f(t) in terms of Jacobi polynomials. Some numerical examples are illustrated.