Christoffel-Darboux-type formulae and a recurrence for biorthogonal polynomials
Christoffel-Darboux-type formulae and a recurrence for biorthogonal polynomials
复制标题
Christoffel-Darboux 型公式和双正交多项式的递推
DOI:
--
复制
发表时间:
1989
期刊:
影响因子:
--
通讯作者:
S. P. Nørsett
中科院分区:
文献类型:
--
作者:
A. Iserles;S. P. Nørsett
It is proved that biorthogonal polynomials obey two different kinds of Christoffel-Darboux-type formulae, one linking polynomials with a different parameter and one combining polynomials with different degrees. This is used to produce a mixed recurrence relation, which is valid for all biorthogonal polynomials. This recurrence relation establishes several results on interlacing property of zeros of successive biorthogonal polynomials and leads to a new result on the interlace of zeros of orthogonal polynomials (of equal degrees) with respect to two distributionsdψ(x) andxpdψ(x), 0