Müntz systems and orthogonal Müntz-Legendre polynomials Academic Article uri icon

abstract

  • The Müntz-Legendre polynomials arise by orthogonalizing the Müntz system with respect to Lebesgue measure on [0, 1]. Inthis paper, differential and integral recurrence formulae for the Müntz-Legendre polynomials are obtained. Interlacing and lexicographical properties of their zeros are studied, and the smallest and largest zeros are universally estimated via the zeros of Laguerre polynomials. The uniform convergence of the Christoffel functions is proved equivalent to the nondenseness of the Müntz space on [0, 1], which implies that in this case the orthogonal Müntz-Legendre polynomials tend to 0 uniformly on closed subintervals of [0, 1). Some inequalities for Müntz polynomials are also investigated, most notably, a sharp L2Markov inequality is proved. © 1994 American Mathematical Society.

author list (cited authors)

  • Borwein, P., Erdélyi, T., & Zhang, J.

citation count

  • 46

publication date

  • February 1994