关于最佳岭函数逼近的等振荡定理的注记
A note on the equioscillation theorem for best ridge function approximation
摘要:
本文研究了定义在$d$维欧几里得空间的紧集上的连续函数的两个脊函数之和的逼近问题。我们得到了这样的和是最佳逼近的一个充要条件。结果类似于经典的多项式逼近的Chebyshev等振荡定理。
英文摘要:
We consider the approximation of a continuous function, defined on a compact set of the $d$-dimensional Euclidean space, by sums of two ridge functions. We obtain a necessary and sufficient condition for such a sum to be a best approximation. The result resembles the classical Chebyshev equioscillation theorem for polynomial approximation.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。