A. Logan

activity

20012020

most citedNontrivial elements of Sha explained through K3 surfaces

2 citations · 3 across the 4 of their papers we have counts for

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Showing 2020Show all

2 papers · 1 filter

math.AG2020★ 1 cited

Crepant resolutions of double covers: On the Cynk-Hulek criterion for crepant resolutions of double cover

Colin Ingalls, Adam Logan

A collection $S = {D_{1}, \dots, D_{n}}$ of divisors in a smooth variety $X$ is an {\em arrangement} if intersections of all subsets of $S$ are smooth. We show that a double cover of…

math.NT2020

Quotient graphs and amalgam presentations for unitary groups over cyclotomic rings

Colin Ingalls, Bruce W. Jordan, Allan Keeton +2

Suppose $4∣ n$ , $n \geq 8$ , $F = F_{n} = Q (ζ_{n} + ζ ˉ_{n})$ , and there is one prime $p = p_{n}$ above $2$ in $F_{n}$ . We study amalgam presentations for $\operatornam…