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Lukas Heger's user avatar
Lukas Heger's user avatar
Lukas Heger's user avatar
Lukas Heger
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My main interests are algebra and number theory.

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Top posts
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question
12
What kind of arithmetic information does the ring of integers in an infinite extension carry?
Feb 4, 2018
question
11
HNN-extension as a 2-colimit
Feb 16, 2020
question
10
Is every UFD a filtered colimit of Noetherian UFDs?
May 1
question
7
What properties do the categories $\mathbf{GrpMod}$ and $\mathbf{GrpMod}^*$ of compatible pairs have? Can we do homological algebra with them?
Dec 4, 2022
question
7
Shouldn't we expect analytic (in the Berkovich sense) étale cohomology of a number field to be the cohomology of the Artin–Verdier site?
May 4
answer
6
Most memorable titles
Oct 25, 2021
question
5
Do all finite-dimensional division algebras appear as Wedderburn factors of rational group rings?
May 31, 2018
question
5
What are the LCA groups that are the Pontryagin dual of a locally profinite abelian group?
Jun 11, 2018
question
4
What are the applications of $\lambda$-rings to class field theory?
Aug 5, 2022
question
2
Lifting irreducibility of polynomials over an integral domain to the quotient field
Feb 11, 2018
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26
How much of a group $G$ is determined by the category of $G$-sets?
24
Is there any variation known to the sum of two squares theorem?
20
Is a ring of integers necessarily Noetherian?
18
Number of Differentiable Structures on a Smooth Manifold
17
Valuation ring lying between a valuation ring and its fraction field