Eric Ahlqvist

activity

20182026

most citedThe étale cohomology ring of the ring of integers of a number field

5 citations · 5 across the 6 of their papers we have counts for

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math.NT2026

Schur $σ$ -groups of type $(3, 3)$ for $p = 3$

Eric Ahlqvist, Richard Pink

For any imaginary quadratic field $K$ , the Galois group $G_{K}$ of its maximal unramified pro- $3$ -extension is a Schur $σ$ -group. If this has Zassenhaus type $(3, 3)$ , there are 13 po…

math.NT2022

Massey products in the étale cohomology of number fields

Eric Ahlqvist, Magnus Carlson

We give formulas for 3-fold Massey products in the étale cohomology of the ring of integers of a number field and use these to find the first known examples of imaginary quadratic…

math.NT2021

The étale cohomology ring of a punctured arithmetic curve

Eric Ahlqvist, Magnus Carlson

We compute the cohomology ring $H^{*} (U, Z / n Z)$ for $U = X ∖ S$ where $X$ is the spectrum of the ring of integers of a number field $K$ and $S$ is a finite set…

math.NT2018★ 5 cited

The étale cohomology ring of the ring of integers of a number field

Eric Ahlqvist, Magnus Carlson

We compute the étale cohomology ring $H^{*} (Spec O_{K}, Z / n Z)$ where $O_{K}$ is the ring of integers of a number field $K .$ As an application…

Schur σ-groups of type (3,3) for p=3

Massey products in the étale cohomology of number fields

The étale cohomology ring of a punctured arithmetic curve

The étale cohomology ring of the ring of integers of a number field

Schur $σ$ -groups of type $(3, 3)$ for $p = 3$