| Dedicated to the memory of my grandfather Paul Alexander (2008) | |||||||||||||||
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| This is my first visit to Leipzig. My main reasons for coming here are personal: to look up the graves and dwellings of my great-grandparents, Salomon and Rebecka Alexander, and to explore the city and the university where my grandfather, Paul Alexander, grew up and studied. But I thought that it would be nice to combine the business of family pilgrimage with the pleasure of giving a math talk. I am very grateful to Wolfgang Hackbusch for kindly accepting my offer to give a seminar talk here. I am also very thankful to all of you for coming! Even though this talk is supposed to be on math rather than on family history, let me nevertheless spend a few minutes telling you about my grandfather Paul Alexander, to whom this talk is dedicated. A Few Words about Paul Alexander 1. Paul got his Dr. Phil. in 1897, here in Leipzig. His dissertation was entitled: “ Über die Einwirkung von o-Nitrobenzylchlorid auf Natriummalonsäureäthylester”. 2. Paul was the inventor of efficient verfahrens for the regeneration (recycling) of caoutchouc (rubber). 3. Paul had many patents, e.g. US # 844077, issued in 1907 entitled “Process for the production | |||||||||||||||
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