A personal history of the m-coefficient

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摘要

This is a short personal history of the m-coefficient for Sturm–Liouville differential and difference equations, now associated historically with the names of Weyl, Hellinger, Nevanlinna and Titchmarsh.

论文关键词：primary 34B20,34B24,secondary 34L05,47E05,Titchmarsh–Weyl m-coefficient,Sturm–Liouville theory,Ordinary differential operators

论文评审过程：Received 15 May 2003, Available online 1 June 2004.

论文官网地址：https://doi.org/10.1016/j.cam.2004.01.010