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Consider estimating the mean vector from data Nn(; 2I ) with lq norm loss,
q 1, when is known to lie in an n-dimensional lp ball, p 2 (0; 1). For large
n, the ratio of minimax linear risk to...
由分数次导数所确定的L2(T)中的一元周期函数类在Lq(T)中的相对宽度
相对宽度 n-K宽度 分数次导数
2009/10/21
作者研究了相对宽度Kn(W2α(T), MW2β(T), L2(T)), T=[0,2 π], 确定了使等式Kn(W2α(T), MW2β(T), L2(T))=dn(W2α(T), L2(T))成立的最小M值, 得到了相对宽度Kn(W2α(T), W2α(T), Lq(T))的渐近阶, 其中α≥β>0, 1≤q ≤ ∞ , Kn (., ., Lq(T)) 和 dn(., Lq(T))分别表...
Some Remarks on the Lp - Lq Boundedness of uCj
Weighted composition operator conditional expectation multiplication operator
2010/2/26
In this paper we will consider the weighted composition operators between two different Lp-spaces and then we characterize the functions u and transformations j that induce weighted composition operat...
On subspaces isomorphic to lq in interpolation of quasi Banach spaces
real interpolation method quasi Banach spaces
2010/3/1
We show that every sequence \{xn\}n=1\infty in a real interpolation space (E0,E1)q,q, 0 < q < 1, 0 < q < \infty, of quasi Banach spaces E0,E1, which is 0-convergent in E0 + E1 but \infn \;\|xn\|(E0,E1...
In this study, we consider the normal subgroups of H'(lq), where H(lq) denotes the Hecke groups. After recalling some results from [2], particularly on the group structure and on the relations with th...
In this work a new proof of the fact that the group structure of the Hecke groups is isomorphic to the free product of two cyclic groups of orders 2 and q is given The method used in the proof require...