共查询到20条相似文献,搜索用时 78 毫秒
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张思逸 《高校应用数学学报(A辑)》2021,36(1):83-88
研究了抽象空间中缓增分数阶微分方程解的吸引性.建立了Cauchy问题存在全局吸引解的充分条件.揭示了缓增分数阶导数求解分数微分方程解的特征. 相似文献
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证明了自反Banach空间X上的等价w2R范数全体构成一个剩余集;同时证明了X闭子空间上等价的w2R范数均可延拓为X上等价的w2R范数.特别地,当X是可分时,上述w2R范数可替换为2R范数. 相似文献
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设T ={tj} j∈Z为实序列 ,使得 {eitjξ} j∈Z构成L2( [-π ,π])的一个Riesz基 .设S2m(T ,R)∩L2 (R)是以T ={tj} j∈Z为非正规节点系的多项式缓增样条函数空间 .证明了S2m(T ,R)∩L2 (R)上的Marcinkiewicz Zygmund和Bernstein不等式 .并由此证得渐近关系:E(f,Bπ ,2 ) 2 =limm→∞ E(f,S2m(T ,R) ∩L2 (R) )2 ,其中Bπ ,2 表示L2 (R)中指数≤π的整函数 ,即经典的Paley-Wiener类 . 相似文献
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对于定数截尾样本,给出了基于极值分布的位置和尺度参数的最好线性无偏估计(BLUE),获得了威布尔分布的可靠度的点估计和置信限之间的回归模型,从而可由威布 尔可靠度的点估计根据回归方程得到可靠度的置信下限,省去了大量的用表,为实际工作者带来了极大的方便,计算结果表明,回归方程有很高的精度。 相似文献
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关于ψ(z)f(z)f‘(z)的值分布 总被引:3,自引:0,他引:3
本文研究有穷圆内ψ(z)f(z)f'(z)的值分布,其中f(z)为非常数亚纯函数,ψ(z)为非零亚纯函数,并对平面上这样的函数,若T(r,ψ)=S(r,f),得到T(r,f)〈9/2N(r,f)+1/2N(r,1/ψff'-1)+S(r,f)。 相似文献
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本文研究了模糊赋范空间中的范数结构问题.利用"切片"的方法,通过引入K函数,在更广泛意义下讨论了带连续t-模的模糊范数空间中存在的范数结构,给出了这些范数结构之间的关系.所得结果推广了现有的结论,并为模糊赋范空间的进一步研究提供了一种新的途径. 相似文献
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A. V. Stoyanovskii 《Functional Analysis and Its Applications》2006,40(3):241-243
We describe the image of the Weil representation of the double covering of the symplectic group in the Schwartz space in the so-called geometric realization, i.e., in holomorphic functions on the symmetric domain called the Siegel upper half-plane. 相似文献
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Tomasz J. Kozubowski 《Annals of the Institute of Statistical Mathematics》2000,52(2):231-238
We show that every strictly geometric stable (GS) random variable can be represented as a product of an exponentially distributed random variable and an independent random variable with an explicit density and distribution function. An immediate application of the representation is a straightforward simulation method of GS random variables. Our result generalizes previous representations for the special cases of Mittag-Leffler and symmetric Linnik distributions. 相似文献
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César Torres 《Mathematical Methods in the Applied Sciences》2017,40(13):4962-4973
In this paper, we are concerned with the existence of ground state solution for the following fractional differential equations with tempered fractional derivative: (FD) where α∈(1/2,1), λ>0, are the left and right tempered fractional derivatives, is the fractional Sobolev spaces, and . Assuming that f satisfies the Ambrosetti–Rabinowitz condition and another suitable conditions, by using mountain pass theorem and minimization argument over Nehari manifold, we show that (FD) has a ground state solution. Furthermore, we show that this solution is a radially symmetric solution. Copyright © 2017 John Wiley & Sons, Ltd. 相似文献
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Soon-Yeong Chung Dohan Kim Sungjin Lee 《Proceedings of the American Mathematical Society》1997,125(11):3229-3234
We give an elementary proof of the equivalence of the original definition of Schwartz and our characterization for the Schwartz space . The new proof is based on the Landau inequality concerning the estimates of derivatives. Applying the same method, as an application, we give a better symmetric characterization of the Beurling-Björck space of test functions for tempered ultradistributions with respect to Fourier transform without conditions on derivatives.
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Teresa Monteiro Fernandes 《Compositio Mathematica》2001,128(3):241-259
A new family of sheaves has been recently studied by M. Kashiwara and P. Schapira generalizing to constructible sheaves the notion of moderate and formal cohomology. We prove comparison theorems when we regard these sheaves as solutions of a D-module. These results are natural generalizations of those of Y. Laurent and the author. 相似文献
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We investigate infinitely divisible distributions on cones in Fréchet spaces. We show that every infinitely divisible distribution
concentrated on a normal cone has the regular Lévy–Khintchine representation if and only if the cone is regular. These results
are relevant to the study of multidimensional subordination.
Research of J. Rosiński supported by a grant from the National Science Foundation. 相似文献
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Allan J. Silberger 《Transactions of the American Mathematical Society》1996,348(11):4673-4686
Let be a reductive -adic group. In his paper, ``The Plancherel Formula for Reductive -adic Groups", Harish-Chandra summarized the theory underlying the Plancherel formula for and sketched a proof of the Plancherel theorem for . One step in the proof, stated as Theorem 11 in Harish-Chandra's paper, has seemed an elusively difficult step for the reader to supply. In this paper we prove the Plancherel theorem, essentially, by proving a special case of Theorem 11. We close by deriving a version of Theorem 11 from the Plancherel theorem.
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We construct a stochastic distributional theory for multiscale,multiphase transport. Field variables are viewed as stochastictempered distributions on Rn. The field variables are made operationalvia convolution with a deterministic compact distribution whichis a representation of the measurement device. The correlationover scales of a field variable is analysed in a stochasticfunctional setting. Examples of functional transport equations,as represented by spectral measures, are presented 相似文献