ORTHOGONAL ZERO INTERPOLANTS AND APPLICATIONS
محورهای موضوعی : فصلنامه ریاضی
M. A. Bokhari
1
(KFUPM, Dhahran
Saudi Arabia
Deptartment of Mathematics & Statatistic)
H. Al-Attas
2
(KFUPM, Dhahran
Saudi Arabia
Deptartment of Mathematics & Statatistic)
کلید واژه: Ortogonal zero interpolant, 3-term recurrence relation, constrained least squares approximation, Parseval equality, Jacobi matrix, Gauss-Radau/Lobatto rules,
چکیده مقاله :
Orthogonal zero interpolants (OZI) are polynomials which interpolate the “zero-function” at a finite number of pre-assigned nodes and satisfy orthogonality condition. OZI’s can be constructed by the 3-term recurrence relation. These interpolants are found useful in the solution of constrained approximation problems and in the structure of Gauss-type quadrature rules. We present some theoretical and computational aspects of OZI’s and also discuss their structure and significance at the multiple nodes.
