Coherent pairs of linear functionals on the unit circle
نویسندگان
چکیده
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: it is established that if ( 0, 1) is a coherent pair of measures on the unit circle, then 0 is a semi-classical measure. Moreover, we obtain that the linear functional associated with 1 is a specific rational transformation of the linear functional corresponding to 0. Some examples are given.
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عنوان ژورنال:
- Journal of Approximation Theory
دوره 153 شماره
صفحات -
تاریخ انتشار 2008