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11.
研究了一种由ICZ引进的Kantorovich型Bernstein-Stancu算子在Lp空间的逼近性质,建立了其逼近的正、逆定理.所得结论推广了经典Kantorovich型Bernstein算子的相关结论. 相似文献
12.
考察了加Jacobi权w(x)=x~α(1-x)~α(α≥0)的L~p空间中Müntz有理函数的逼近问题.利用K-泛函与加权光滑模的等价性给出了逼近阶的估计以及Ditzian-Totik型定理.所得结果将已有文献中的相应结论推广到了加权情形. 相似文献
13.
The periodic problem of evolution inclusion is studied and its results are used toestablish existence theorems of periodic solutions of a class of semi-linear differential inclusion.Also existence theorem of the extreme solutions and the strong relaxation theorem are given forthis class of semi-linear differential inclusion. An application to some feedback control systems isdiscussed. 相似文献