Problem 24.4.681116FD94515

Problem 24.4.6.81116FD94515 Let $n\geq 2$ and let $h$ be a Hermitian form on $X$. Find geometric conditions, beyond the metric identities in corollary 12.18.1, that imply the endpoint estimate in (24.4.5), and explain how they exclude the degeneration of zero lower mass constructed in section 12.19.