Mathematics
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Stefan Geschke
  • Member for 10 years, 10 months
  • Last seen more than 9 years ago
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I am a math professor at the Hausdorff Center for Mathematics in Bonn. Most of my work is in Set Theory of the reals and Boolean algebras.

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78
What is the cardinality of the set of all topologies on $\mathbb{R}$?
48
What's a magical theorem in logic?
40
Does anyone know a polynomial whose lack of roots can't be proved?
39
The sets in mathematical logic
34
Work on independence of pi and e

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