| Fall, 2008: I'm teaching multivariable calculus this semester. Besides helping out Otto Bretscher a bit for the solution manual of his new edition, the beginning of the semester was also used to finalize with John Lesieutre a project on Dirichlet series with almost periodic coefficients of the summer. John had been working with me as a PRISE fellow on this exciting project during the summer. In the second half of the semester, I started with Michael Teodorescu a beautiful HCRP project in elementary differential geometry. Here is the project page. We spent the last days of the year on Cape Ann.
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| Summer, 2008: Quite a bit of training for a triathlon in Switzerland, a rerun of the 1987 "transswiss". Instead of roller blading, I biked 1000 km/month for 3 months often tripling or quadrupling my bike time to/from work. Highlights were trips to Gloucester(5h) or Wachusetts(7h). Even so I had been swimming competitively as a teenager and swam almost daily during my California and Arizona years, swimming needed a refresh (1-2 km/week for 4 months and two 4K full distance tests). I continued to run 10-20 km/day as usual. Also the summer school course and a KAM project were fun. The summer ended with travels to Switzerland and Israel: Wallis, Uhwiesen, and Haifa/TelAviv.
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| Spring, 2008: I'm teaching Math21b, linear algebra this semester. The semester with a presentation organized by SCI. 2008 is the year of mathematics. In Germany, the "year of mathematics" produces quite a bit of hype, the German TV for example shows a report. Apropos movies: the "math in movies" page got a bit updated this year. Google also built the science center.
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