Tribute André Brink: In defiance of boundaries

Dialog Across Boundaries: A Tribute to Dieter Falkenhagen.

Professor Dr. Dieter Falkenhagen, the brilliant scientist and great science organizer with a huge commitment to application science, whose work stimulated students, scientists, and physicians, passed away in Berlin, Germany on August 11, 2015. Dieter was born on March 23, 1942 in Dresden, Germany as the eldest son of the renowned physicist and director of the Institute of Theoretical Physics at...

Part IV Defiance in Groups

A conjecture of Yves André . ∗

The introduction to [2] (and references contained therein) contains a comprehensive exposition of terminology and notations relative to this conjecture. Since we use the same terminology and notations, we do not reproduce them here. The introduction to [2] also contains an exposition of results on this conjecture obtained before the article [3] came out. In this article we prove the following t...

Back from the brink

Against the backdrop of a global loss of biodiversity, some wildlife species have recovered from severe decimation, as a recent report shows for dozens of species in Europe. While these encouraging signs don't diminish the current crisis of species loss, the analysis of the underlying reasons--ranging from targeted conservation measures to unintended consequences of changes in human behaviour--...

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