Polynomial approximation of symmetric functions
Polynomial approximation of symmetric functions
复制标题
对称函数的多项式逼近
DOI:
10.1090/mcom/3868
复制
发表时间:
2023
影响因子:
2
通讯作者:
Bachmayr M
中科院分区:
文献类型:
--
作者:
Bachmayr M
We study the polynomial approximation of symmetric multivariate functions and of multi-set functions. Specifically, we consider, where, andis invariant under permutations of itsarguments. We demonstrate how these symmetries can be exploited to improve the cost versus error ratio in a polynomial approximation of the function, and in particular study the dependence of that ratio onand the polynomial degree. These results are then used to construct approximations and prove approximation rates for functions defined on multi-sets wherebecomes a parameter of the input. References