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Sebastian Schoennenbeck's user avatar
Sebastian Schoennenbeck's user avatar
Sebastian Schoennenbeck's user avatar
Sebastian Schoennenbeck
  • Member for 11 years, 4 months
  • Last seen more than a month ago
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Postdoctoral researcher at RWTH Aachen focussing on (algorithmic) number theory.

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6
Centralizers of reflections in special subgroups of Coxeter groups
Mar 19, 2015
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2
Compact form of symplectic groups defined over the rationals
Jun 23, 2015
answer
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Centralizers of reflections in special subgroups of Coxeter groups
Apr 9, 2015
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12
Every finite group is the Galois group of a field extension
11
Is this quotient ring finite?
10
When does -1 have a squareroot in a finite field? (-1 as a quadratic residue)
10
Are two subgroups that contain a common element conjugate iff they are conjugate under the normalizer?
9
Showing determinants using trace in a 2x2 matrix