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Arno Fehm's user avatar
Arno Fehm's user avatar
Arno Fehm
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Score Newest
answer
18
Classify all the fields with abelian absolute Galois group
Feb 17, 2020
answer
12
Is $\mathbb{Z}$ universally definable in any number fields other than $\mathbb{Q}$?
Jan 24, 2021
question
10
A property of varieties between unirational and retract rational
May 8, 2020
question
10
Are the nonnegative rationals diophantine with only two quantifiers?
May 4, 2021
answer
10
What is the lowest complexity definition of $\mathbb{Z}$ in an infinite extension of $\mathbb{Q}$
Feb 4, 2021
answer
10
Nowhere negative polynomials form a semialgebraic set
May 2, 2021
answer
10
Field complete with respect to inequivalent absolute values
Nov 5, 2022
answer
8
Commutator subgroup of the absolute Galois group - a closed subgroup
Jun 22, 2020
answer
8
Inverse Galois problem for non-Galois extensions
Nov 18, 2020
answer
8
Uncountable counterexamples in algebra
May 9, 2021
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What is wrong with this application of Ax-Kochen?

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