共查询到20条相似文献，搜索用时 78 毫秒
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景彩霞;周立芳 《湖州师范学院学报》2013,(6):24-28
Berezin变换在研究Bergman空间上的算子理论中发挥了重要作用.利用超几何函数和Schur检验,给出了开单位圆盘上的Berezin变换的Lp(1相似文献
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本文在Lp(X,dμ)上定义非对称范数‖f‖p,(α,β),并在此基础上给出了非对称范数意义下Hardy-Little-wood极大算子的性质. 相似文献
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谭海鸥 《五邑大学学报(社会科学版)》1993,(3)
本文研究了经典的Schwarz引理在复超球上的推广并由此建立了复单位球的Poincar(?)度量。此外还给出了它们在多元复分析中的若干应用。 相似文献
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用B表示Cn中的复单位球,S表示B的边界,H(B)表示B上的一纯函数全体。设f,g∈H(B),φ是B上的全纯自映射,Volterra复合算子Tg,φ定义如下:Tg,φf(z)=0∫1f(φ(tz))Rg(tz)(dt)/t,z∈B。研究了从对数型空间的Hlog∞到混合范数空间上Volterra复合算子Tg,φ的有界性及紧性。 相似文献
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应用Berezin变换和调和延拓理论,得到2个Toeplitz算子可交换的一个充要条件和Toeplitz算子乘积相等的一些性质。 相似文献
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给定正规权函数φ和μ,以H(p,q,φ)和Bμ分别表示Cn中单位B上的混合模空间和Bloch型空间，其中0g表示单位球B上以全纯函数g为符号的广义Cesàro算子，刻画了H(p,q,φ)和Bμ之间广义Cesàro算子Tg的本性范数，获得了相应的本性范数估计. 相似文献
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Orlicz函数空间的k-端点和k-强端点 总被引：1，自引：0，他引：1
给出了赋Orlicz范数的Orlicz函数空间单位球k-端点和k-强端点的判据，并据此方便地得到了赋Oricz范数Orlicz函数空间是K严格凸(KR)和中点局部K-致凸(MLKUR)的条件． 相似文献
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本文研究了空间单位球 B~n上的拟共形映照 f 的 Hlder 连续性,当 logJ_f 的 BMO 范数足够小时证明了 f 在 B~n上具有Hlder 连续性,该结果是 K.Astala 和 F.W.Gehring 在文定理5.7的平面结果的空间推广。 相似文献
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LI Guang_qin 《陕西理工学院学报(社会科学版)》2002,(3):13-17
研究了Lp( μ ,X)中的复一致凸和复局部一致凸性 ,得出了比Orlicz空间更强的结论 .即 :Lp( μ ,X)复一致凸的充要条件是X复一致凸 ;Lp( μ ,X)复局部一致凸的充要条件是对任意的x ∈S(Lp( μ ,X) )和ε >0 ,存在δ >0 ,对任意y ∈Lp( μ ,X) ,‖y｜A(x,y ,δ) ‖p =∫A(x,y ,δ)‖y(ω)‖pdy1p ≤ ε3 ( 1 ≤p≤ ∞ ) ,A(x ,y ,δ) =ω ∈Ω :14∑k‖x(ω) ky(ω)‖ ≤ ( 1 δ)‖x(ω)‖ . 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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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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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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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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《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