It is described how my contacts with a group of functional analysts in Chemnitz (Germany) came along and resulted in a longstanding cooperation on logarithmic residues and spectral regularity in a Banach algebra setting.

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doi.org/10.1016/j.laa.2013.02.008, hdl.handle.net/1765/39469
Linear Algebra and Its Applications
Erasmus School of Economics

Bart, H. (2013). The Chemnitz connection. Linear Algebra and Its Applications, 439(3), 520–523. doi:10.1016/j.laa.2013.02.008