51 citations · 129 across the 9 of their papers we have counts for
9 papers
Fourier-Mukai partners of non-syzygetic cubic fourfolds and Gale duality
Christian Böhning, Hans-Christian Graf von Bothmer, Lisa Marquand
We study so-called non-syzygetic cubic fourfolds, i.e., smooth cubic fourfolds containing two cubic surface scrolls in distinct hyperplanes with intersection number between the two…
Equivariant birational geometry of cubic fourfolds and derived categories
Christian Böhning, Hans-Christian Graf von Bothmer, Yuri Tschinkel
We study equivariant birationality from the perspective of derived categories. We produce examples of nonlinearizable but stably linearizable actions of finite groups on smooth cub…
Hexapods with a small linear span
Hans-Christian Graf von Bothmer, Matteo Gallet, Josef Schicho
The understanding of mobile hexapods, i.e., parallel manipulators with six legs, is one of the driving questions in theoretical kinematics. We aim at contributing to this understan…
Prelog Chow rings and degenerations
Christian Böhning, Hans-Christian Graf von Bothmer, Michel van Garrel
For a simple normal crossing variety , we introduce the concepts of prelog Chow ring, saturated prelog Chow group, as well as their counterparts for numerical equivalence. Think…
Degenerations of Gushel-Mukai fourfolds, with a view towards irrationality proofs
Christian Böhning, Hans-Christian Graf von Bothmer
We study a certain class of degenerations of Gushel-Mukai fourfolds as conic bundles, which we call tame degenerations and which are natural if one wants to prove that very general…
Conic bundles with nontrivial unramified Brauer group over threefolds
Asher Auel, Christian Böhning, Hans-Christian Graf v. Bothmer +1
We derive a formula for the unramified Brauer group of a general class of rationally connected fourfolds birational to conic bundles over smooth threefolds. We produce new examples…