Affiliation:
1. Advanced Research Laboratory, R&D Center Sony Group Corporation Tokyo Japan
2. Department of Mathematics Faculty of Science Kyoto University Kyoto Japan
Abstract
AbstractWe study the branch divisors on the boundary of the canonical toroidal compactification of ball quotients. We show a criterion, the low slope cusp form trick, for proving that ball quotients are of general type. Moreover, we classify when irregular cusps exist in the case of the discriminant kernel and construct concrete examples for some arithmetic subgroups. As another direction of study, when a complex ball is embedded into a Hermitian symmetric domain of type IV, we determine when regular or irregular cusps map to regular or irregular cusps studied by Ma.
Funder
Japan Science and Technology Agency
Cited by
1 articles.
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