5 citations · 8 across the 11 of their papers we have counts for
13 papers
Naive atoms of blowups: examples
Christian Böhning, Hans-Christian Graf von Bothmer, Zac Su'a
We define naive atomic decompositions of smooth projective varieties. We show that they satisfy a naive version of Iritani's blowup formula in several examples that are complicated…
Explicit bounds on common projective torsion points of elliptic curves
Christian Böhning, Hans-Christian Graf von Bothmer, David Hubbard
Suppose E_1, E_2 are elliptic curves (over the complex numbers) together with standard double coverings of the projective line identifying a point and its inverse on E_i. Bogomolov…
Moduli spaces of 6 x 6 skew matrices of linear forms on P^4 with a view towards intermediate Jacobians of cubic threefolds
Christian Böhning, Hans-Christian Graf von Bothmer, Lukas Buhr
It is well known that every smooth cubic threefold is the zero locus of the Pfaffian of a 6 x 6 skew-symmetric matrix of linear forms in P^4. To compactify the space of such Pfaffi…
Formats of 6 x 6 skew matrices of linear forms with vanishing Pfaffian
Christian Böhning, Hans-Christian Graf von Bothmer
We show that every skew-symmetric 6 x 6 matrix of linear forms with vanishing Pfaffian is congruent to one of finitely many types of matrices, each of which is characterised by a s…
Matrix factorizations and intermediate Jacobians of cubic threefolds
Christian Böhning, Hans-Christian Graf von Bothmer, Lukas Buhr
Results due to Druel and Beauville show that the blowup of the intermediate Jacobian of a smooth cubic threefold X in the Fano surface of lines can be identified with a moduli spac…
Universal triviality of the Chow group of 0-cycles and the Brauer group
Asher Auel, Alessandro Bigazzi, Christian Böhning +1
We prove that a smooth proper universally CH_0-trivial variety X over a field k has universally trivial Brauer group. This fills a gap in the literature concerning the p-torsion of…