The Baily-Borel compactification of a family of orthogonal modular varieties
arXiv:2108.06236
Abstract
We study the Baily-Borel compactification of a family of four-dimensional orthogonal modular varieties arising in connection with moduli and periods of compact hyperkähler manifolds of deformation generalised Kummer type. Our main results concern the classification of boundary components, their incidence relations and combinatorics.
16 pages, incorporates some results from arXiv:1604.00726, which it replaces