Article

**in Spectral Analysis, Differential Equations and Mathematical Physics, H. Holden et al. (eds), 343-364, Proceedings of Symposia in Pure Mathematics 87, 2013**[url] [DOI: 10.1090/pspum/087]

## Spectral Theory as Influenced by Fritz Gesztesy

### Gerald Teschl and Karl Unterkofler

We survey a selection of Fritz's principal contributions to the field of spectral theory and, in particular, to Schrödinger operators.

** MSC2010:** Primary 35P05, 34L40; Secondary 34B20, 34B24.

**Keywords:** *Schrödinger operators, Spectral theory, Oscillation theory*

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