Weakly exceptional singularities of log del Pezzo surfaces

In Kyun Kim, Joonyeong Won

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We complete the computation of global log canonical thresholds, or equivalently alpha invariants, of quasi-smooth well-formed complete intersection log del Pezzo surfaces of amplitude 1 in weighted projective spaces. As an application, we prove that they are weakly exceptional. And we investigate the super-rigid affine Fano 3-folds containing a log del Pezzo surface as boundary.

Original languageEnglish
Article number1950010
JournalInternational Journal of Mathematics
Issue number1
StatePublished - 1 Jan 2019


  • affine super-rigidity
  • alpha invariant
  • Log del Pezzo
  • weakly exceptional singularity


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