Yuri Matiyasevich plans:

• April 7 - May 7, 2007:

  to be Germany (Max Planck Institute for Mathematics in Bonn)
   

• May 7-12, 2007:

  to be in Finland (in Turku at "Algorithmic Number Theory")
   

• June 25-30, 2007:

  to be in UK (Edinburgh)
   

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URL of my original Home page is http://logic.pdmi.ras.ru/~yumat/index.html.
It has a mirror at http://www.informatik.uni-stuttgart.de/ifi/ti/personen/Matiyasevich/index.html.
All comments can be e-mailed to me, Yuri Matiyasevich.