Campana points on biequivariant compactifications of the Heisenberg group

优美紧化上的Campana点

Campana points on wonderful compactifications

本文证明了伴随型半单代数群优美紧化上Campana点的Manin猜想变体，并以此为关于该猜想首项常数的新猜想提供了证据。

Campana points of bounded height on vector group compactifications

We initiate a systematic quantitative study of subsets of rational points that are integral with respect to a weighted boundary divisor on Fano orbifolds. We call the points in these sets Campana points. Earlier work of Campana and subsequently Abramovich shows that there are several reasonable competing definitions for Campana points. We use a version that delineates well different types of behaviour of points as the weights on the boundary divisor vary. This prompts a Manin-type conjecture on Fano orbifolds for sets of Campana points that satisfy a klt (Kawamata log terminal) condition. By i…