L2(R2;e-x2-y2)中一个特殊函数类的Kolmogorov n-宽度及最佳逼近的界的估计
L2(R2;e-x2-y2)중일개특수함수류적Kolmogorov n-관도급최가핍근적계적고계
Estimates of the bounds of best approximation and Kolmogorov n-width of a special class of functions in L2 (R2 ;e-x2-y2 )
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