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1.
利用小函数方法得到了:若ψ(z)是非零的亚纯函数,且T(r,ψ)=S(r,f),则有(n 1)T(r,f)≤N(r,1/f^1f^n-ψ) 2N(r,1/f) N(r,f) S(r,f).  相似文献   

2.
研究不可约图的补图的色唯一性问题是图论的一个重要内容,该文在论证过程中利用图G的伴随多项式的最小根的性质及比较伴随多项式的末项。找到了一类n个点n l条边且R(G):-2的图簇。其补图是色唯一的。主要结论是如下定理:设|V(A3(r1,r2))|=n(≥10),其中r1≥3,r2≥5。若r2=5且A3(r1,r2)不可约,则A3(^→r1,r2)是色唯一的。即A3(^→r1,5)是色唯一的。  相似文献   

3.
讨论了一般微分单项式的值分布 ,得到定理 :设 f 是平面上的超越亚纯函数 .F=fn0 (f( i) ) ni… (f( k) ) nk-c,ni≥ 1,c≠ 0是常数 ,那么 (n0 -2 ) T(r,f )≤ N(r,1F ) S(r,f )  n0 >2T(r,f )≤ 7(i 1)i (Ni) (r,1f ) N(r,1F) ) S(r,f )  n0 =1T(r,f )≤ 7(N (r,1f ) N(r,1F) ) S(r,f )  n0 =0 .  相似文献   

4.
关于模m的连续二次剩余组中剩余的最大个数有一个至今还未解决的猜想,以此相应,本文提出了模m的等比剩余组的概念,并且利用二次剩余函数r(x)证明了模m的等比剩余组中剩余的最大个数是2R,在模m的标准分解式是m=p1^α1p2^α2……pn^αn时,这里的R是最小公倍数[r(p1^α1),r(p2^α2),……,r(pn^αn)],其中r(pi^αi)是二次剩余函数r(x)在x=pi^αi时的函数值,i=1,2,3……,n。  相似文献   

5.
定理 设Sr(n)=^n∑k=1(a (k-1)d)^r,r=0,1,2,…,。则Sr-1(n)与Sr(n)之间存在如下关系:Sr 1(n)=(r 1)d∫^n0Sr(t)dt ar 1n,其中ar 1=a^r 1-(r 1)d∫^1 0Sr(t)dt.当a d 1时,Sr(n)=^n∑i=1 i^r,得:Sr 1(n)=(r 1)d∫^n 0Sr(t)dt ar 1n,其中,ar 1=1-(r 1)∫^1 0Sr(t)dt.  相似文献   

6.
[目的]双歧杆菌(Bifidobacterium)耗尽培养上清(SCS)对菌群失调小鼠肠道生理菌群的影响.[方法]首先腹腔注射青霉素液造菌群失调动物模型,然后分别以双歧杆菌菌液、耗尽培养上清液对菌群失调小鼠进行灌胃治疗.[结果]Bif组、SCS组同自然恢复组的肠道生理菌群相比均有显著性差异.[结论]双歧杆菌SCS对小鼠肠道菌群失调的恢复具有调整作用,尤其对双歧杆菌及乳杆菌有更明显的扶持作用.  相似文献   

7.
主要给出了卡氏积图Km,×Kn.Sm×S0,Sm×Cm,Sm×P0的控制数,其中Kn为m阶完全图,Cn是n圈,Pn是长度为n-1的路,Sm是星图.主要结果如下:r(Km×Kn)=min(m,n);r(Sm×Sn)=min{m-1,n 1};r(Sm×Cn)=n(m≥4);r(Sm×Pn)=n(m≥4).  相似文献   

8.
设 P是△ ABC内部任意一点 ,P至边BC,CA,AB的距离分别为 r1 ,r2 ,r3 ,令 PA= R1 ,PB=R2 ,PC=R3 ,涉及三角形内部任意一点的不等式是一类十分有趣的几何不等式 ,最著名的是 Erdos- Mordell不等式R1 +R2 +R3 ≥ 2 (r1 +r2 +r3 ) . (1)本文将证明关于 (R1 ,R2 ,R3 )及 (r1 ,r2 ,r3 )与△ ABC半周长 s的一个线性不等式 .首先给出一个优美简洁的引理 .引理 设 P是△ ABC内部任意一点 ,则(R1 +R2 +R3 ) 2≥s2 +(r1 +r2 +r3 ) 2 . (2 )当且仅当△ ABC为正三角形且 P为中心时(2 )式取等号 .证明 令 BC=a,CA=b,AB=c,ha 为BC边…  相似文献   

9.
图C5的(r1,r2,r3,0,0)-冠简记为C5(r1,r2,r3,0,0),St(m)表示有m+1个顶点或有m条边的星型树.讨论了C5(r1,r2,r3,0,0)与St(m)的非连通并集C5(r1,r2,r3,0,0)∪St(m)优美性,用构造性的方法给出了一些特殊的C5(r1,r2,r3,0,0)∪St(m)的优美标号.  相似文献   

10.
本文我们得到以下结果定理:设f(z),a_j(z)是复平面C上的亚纯函数,若a_1,…,a_q各自满足则对于任何正数ε>0,我们有 m(r,f)+sum from j=1 to q m(r,1/f-a_j)≤(2+ε)T(r,f)-1/n N(r,1/W)-1/n m(r,(L(f))~n/W)+S(r,f)这里L(f)和W是由如下两个朗斯基行列式所定义  相似文献   

11.
汉字倒说     
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   

12.
《海外英语》2007,(5):44-45
It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,  相似文献   

13.
钱生钱!     
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   

14.
《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   

15.
王菲 《华章》2007,(12):273-273
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.  相似文献   

16.
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex.  相似文献   

17.
现在,我们可以没有面包,没有钱,没有房子,没有车子……但我们唯独不能丢失的是高尚的情操,笃定的信念,还有,满满的希望!  相似文献   

18.
裴水妹 《华章》2007,(11):196
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.  相似文献   

19.
20.
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…  相似文献   

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