共查询到20条相似文献，搜索用时 62 毫秒
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设F2vq是Fq上的2v维辛空间,v是一个正整数。可知F2vq中满足0≤m1≤v的所有(m1,0)型全迷向子空间按子空间的包含关系构成秩为v的有限偏序集,由此可以证明该偏序集是一致偏序的。 相似文献
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设IFq是一个q元有限域,v是一个自然数,1≤i≤v,在这篇章中,我们证明了以下公式：∑a≤j1≤j2…＜ji≤vJ1,J2,…ji∈Nqj1 j2 …ji=q^i(i 1)/2[vi]q,这里[vi]q是Gauss系数。 相似文献
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在本文中,笔者将W.K.Hayman的经典著作“亚纯函数”定理4·1加以推广,由任意指定的复数列{a_v}_V~N=1,扩充到任意指定的多项式列{a_v(z)}_(v=1)~N(次数为k<∞),给出了一个新定理.定理:设{a_v(z)}_(v=1)~N、{δ_v}_(v=1)~N(N≤∞)分别为任意指定的多项式列(次数为k<∞)和正数列,且,0≤δ_v≤1、sum from v=1 to N(δ_v≤1),则必存在一个整函数f(z),使得δ(a_v(z),f)=δ_v 1≤v≤N,对a(z)(?){a_v(z)}_(V=1)~N,有δ(a(z),f)=0. 相似文献
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丁晓红 《数学学习与研究(教研版)》2012,(7):118-119
设G是简单图,图G的一个k-点可区别IE-全染色(简记为k-VDIET染色),f是指一个从V(G)∪E(G)到{1,2,…,k}的映射,且满足:uv∈E(G),有f(u)≠f(v);u,v∈V(G),u≠v,有C(u)≠C(v),其中C(u)={f(u)}∪{f(uv)|uv∈E(G)}.数min{k|G有一个k-VDIET染色}称为图G的点可区别IE-全色数,记为χviet(G).本文给出了完全二部图K6,n(7≤n≤243)的点可区别IE-全色数. 相似文献
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两个图G1和G2的笛卡尔积图G1×G2定义为如下的图:V(G1×G2)=V(G1)×V(G2),E(G1×G2)={(u1,u2)(v1,v2)|u1=v1且u2v2∈E(G2),或者u2=v2且u1v1∈E(G1).图的交叉数是图论中的一个重要拓扑参数,而确定图的交叉数是一个完全NP-问题.本文确定了若干树Tn(n≤4)与圈Cm的笛卡尔积图的交叉数. 相似文献
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设D是一个2-（v，23，1）设计，G≤Aut（D）可解区-传递但非旗-传递，且G是点-本原的，则V=p^n，G≤AFL（1，P^n），且p≠2． 相似文献
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两个图G1和G2的笛卡尔积图G1×G2定义为如下的图：V（G1×G2）=V（G1）×V（G2）,E（G1×G2）={（u1,u2）（v1,v2）｜u1=v1且u2v2∈E（G2）,或者u2=v2且u1v1∈E（G1）}．图的交叉数是图论中的一个重要拓扑参数,而确定图的交叉数是一个完全胛一问题．本文确定了若干树Tn（n≤4）与圈Cm的笛卡尔积图的交叉数． 相似文献
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《时代数学学习》2005,(3):19-19
问题2.12令n是一个五位数(当然第一位数是非零的),m是一个四位数,它的组成是由五位数删除中间一个数字得到的,确定所有的n使得nm是一个整数.解令n=x·104+y·103+z·102+u·10+v,这样m=x·103+y·102+u·10+v,并且10m-n=(u-z)·102+(v-u)10-v表示一个不超过三位的整数.这样10m-nm表示一个整数∵10m-nm=10-nm,题目要求nm是一个整数,∴10m-nn表示一个整数.这里分子不超过三位,分母是四位数,因此10m-n=0,由此得u=v=z=0.这样n=x·104+y·103,而m=x·103+y·102,即n的组成是n=103N,这里10≤N≤99.“问题2.12”参考答案… 相似文献
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任秋道 《内江师范学院学报》2009,24(10):26-29,54
设圈C=v1v2…vmv1,m≥3．在圈C的顶点vi1,vi2,…,vil分别悬挂一条路Pk1,Pk2,…,Pkl的图记为Cili2…il（Pk1,Pk2,…,Pkl）,1≤ij≤m,1≤j≤l．顶点vm悬挂l条Pk1,Pk2,…,Rkl的图简记为Cm^l（Pk1,Pk2,…,Pkl）．在圈C=v1v2…vmv1的顶点i,上悬挂l条路Pkl,Pk2,…,Pkl的图的最大特征值不小于将l条路分别悬挂在l个顶点i1,i2,…,il的图的最大特征值,即λ1（Gi1^l（Pk1,Pk2,…,Pkl））≥λ1（Ci1i2…il（Pk1,Pk2,…Pkl）,1≤ij≤m-1,j=1,2,…,l． 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献