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对赋Luxember范数或Orlicz范数的Orlicz型序列空间,诸如古典的、广义的及参数式的,本文总结、补充、比较列出了暴露点及暴露性的充分必要刻画,并对以往结果中的错误进行了修正,从而在序列空间方面系统地完成了有关暴露性的刻画。 相似文献
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研究了广义Orlicz序列空间关于Luxemburg范数的非方性,参考经典Orlicz空间的讨论方法,发展了广义情形下的新方法,给出了判别该性质的充要条件. 相似文献
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张建中 《纯粹数学与应用数学》1990,6(2):91-93
我们首先回顾有关定义。设实值函数Φ(X)定义在[0,∞)上,若Φ是一个单调的连续的次可加函数,且满足条件:Φ(X)=0当且仅当X=0,则称Φ是一个模函数,设D表示复平面上的开单位圆盘,H(D)表示D上解析函数全体。对于一个给定的模函数Φ,Har-dy—Orlicz空间H(Φ)定义为 相似文献
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本文给出了Orlicz序列空间的弱收敛序列系数的表达式. 相似文献
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Orlicz序列空间的Opial性质 总被引:1,自引:0,他引:1
本文给出了Orlicz序列空间具有Opial性质的条件,进而得到了具有Opial条件的Orlicz序列空间中的任何一个非空的依坐标收敛闭的有界凸集上的第一类非扩张映射T必有不动点. 相似文献
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证明了Orlicz序列空间lm的粗系数R(lm)=2/supky,这里‖y‖0n=1ky=min{k>0:‖y‖0n=1/k(1+PN(ky))}. 相似文献
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本文研究Orlicz序列空间的对偶映射,给出对偶映象集为弱紧集的充分必要 条件.作为推论,得到Orlicz序列空间的弱接近光滑性的充要条件. 相似文献
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Upper estimates for the order of Gâteaux smoothness of bump functions in Orlicz spaces ℓM(Γ) and Lorentz spaces d(w, p, Γ), Γ uncountable, are obtained. 相似文献
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In this paper, the authors study the inclusion relations between Dirichlet type spaces DT and α-Bloch spacesβα by means of higher radial derivative. The strictness and the best possibility of the inclusion relations are shown with constructive methods.Furthermore, they sharpen one of the results when T = n, which proves that a conjecture in [7] is true. 相似文献
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Antonio S. Granero Henryk Hudzik 《Proceedings of the American Mathematical Society》1996,124(12):3777-3787
In this paper we study some structural and geometric properties of the quotient Banach spaces , where is an arbitrary set, is an Orlicz function, is the corresponding Orlicz space on and , being the ideal of elements with finite support. The results we obtain here extend and complete the ones obtained by Leonard and Whitfield (Rocky Mountain J. Math. 13 (1983), 531-539). We show that is not a dual space, that , if for every , that has no smooth points, that it cannot be renormed equivalently with a strictly convex or smooth norm, that is a Grothendieck space, etc.
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Various characterizations are given of the exponential Orlicz space L and the Orlicz‐Lorentz space L. By way of application we give a simple proof of the celebrated theorem of Brézis and Wainger concerning a limiting case of a Sobolev imbedding theorem. 相似文献
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《Journal of Functional Analysis》2023,284(1):109739
We give a sufficient (and, in the case of a compact domain, a necessary) condition for the embedding of Sobolev space of functions with integrable gradient into Besov-Orlicz spaces to be bounded. The condition has a form of a simple integral inequality involving Young and weight functions. We provide an example with Matuszewska-Orlicz indices of involved Orlicz norm equal to one. The main tool is the molecular decomposition of functions from a BV space. 相似文献
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《Mathematische Nachrichten》2017,290(1):19-36
Given and a Young function η, we consider the generalized fractional maximal operator defined by where the supremum is taken over every ball B contained in . In this article, we give necessary and sufficient Dini type conditions on the functions , and η such that is bounded from the Orlicz space into the Orlicz space . We also present a version of this result for open subsets of with finite measure. Both results generalize those contained in 6 and 14 when , respectively. As a consequence, we obtain a characterization of the functions involved in the boundedness of the higher order commutators of the fractional integral operator with BMO symbols. Moreover, we give sufficient conditions that guarantee the continuity in Orlicz spaces of a large class of fractional integral operators of convolution type with less regular kernels and their commutators, which are controlled by . 相似文献
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Stanislav Hencl 《Journal of Mathematical Analysis and Applications》2006,322(1):336-348
We prove that the generalized Trudinger inequalities into exponential and double exponential Orlicz spaces improve to inequalities on Orlicz-Lorentz spaces provided they are stable under truncation. 相似文献
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Given α, 0 < α < n, and b ∈ BMO, we give sufficient conditions on weights for the commutator of the fractional integral operator, [b, I
α
], to satisfy weighted endpoint inequalities on ℝn and on bounded domains. These results extend our earlier work [3], where we considered unweighted inequalities on ℝn. 相似文献