Self-adjoint boundary conditions for singular Sturm-Liouville problems and the computation of $m$-functions for Bessel, Legendre, and Laguerre operators.

Fritz Gesztesy

http://www.birs.ca/events/2019/5-day-workshops/19w5209/videos/watch/201910081333-Gesztesy.html

Birs- 19w5209: Herglotz-Nevanlinna Theory Applied to Passive, Causal and Active Systems