Arno Pähler

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I have lived and worked in six countries on three continents, Germany, the USA, Japan, Austria, Czechia and Sweden. My personal interests are astronomy, chess and travel. My professional interests are mathematics, physics and macromolecular crystallography.. My favorite programming language by far is Python. Currently I work mostly on research in special relativity, quantum mechanics and nonlinear time series and nonlinear partial differential equations.
Most of my professional career I spent as a research scientist in academic and industrial research in the field of protein crystallography, covering experimental, theoretical and computational aspects of the field. My most important contribution was to the development and first succeessful application of a technology called multi-wavelength anomalous diffraction. It is now the default method for new structures. My postdoctoral work involved the first successful application of the method in 1987.

Cauchy Integral Formula

$$\Large{f(a) = \frac{1}{2\,\pi\,i}\,\oint_\gamma\,\frac{f(z)}{z - a}\,dz}$$