Coherent pairs of linear functionals on the unit circle

• Autor(es): Branquinho, Amílcar ; Foulquie Moreno, Ana Pilar ; Marcellán, Francisco ; Rebocho, Maria das Neves
• Data: 2008
• Identificador Persistente: http://hdl.handle.net/10773/8429
• Origem: RIA - Repositório Institucional da Universidade de Aveiro
• Assunto(s): Orthogonal polynomials; Differential equations; Three-term recurrence relations; Measures on the unit circle; Hermitian functionals
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

In this paper we extend the concept of coherent pairs of measures from the real line to Jordan arcs and curves. We present a characterization of pairs of coherent measures on the unit circle. Some examples are given.