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Johannes Hahn's user avatar
Johannes Hahn's user avatar
Johannes Hahn's user avatar
Johannes Hahn
  • Member for 14 years, 8 months
  • Last seen more than 2 years ago
  • Aachen, Germany
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About

Studied math, PhD, was a software developer / tech consultant for a while, returned to university as a PostDoc, now software developer again. Still a mathematician at heart.

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Top posts
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10
How much is MathOverflow exposed to recent events on StackExchange?
Oct 12, 2019
question
7
Request: Add the option to close to review tasks from the "first questions" queue
Aug 27, 2021
Top network posts
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45
Fantastic properties of Z/2Z
40
Problems where we can't make a canonical choice, solved by looking at all choices at once
24
Odd digits of $2^n$
23
Is cohomology always related to topology?
21
What functions are support functions of convex sets