5 papers
Divisorial contractions of algebraic varieties
Sergey A. Kudryavtsev
This paper has been withdrawn by the author. It is not true that plt blow-up of toric singularity is toric (in dimension 3 too) and the first main theorem is incorrect also. The er…
Classification of log Enriques surfaces with delta=1
Sergey Kudryavtsev
Log Enriques surfaces with delta=1 are classified.
Classification of three-dimensional exceptional log canonical hypersurface singularities II
Sergey Kudryavtsev
In this paper the detailed classification of three-dimensional exceptional canonical hypersurface singularities which don't satisfy the condition of well-formedness is given. This…
On exceptional terminal singularities
S. A. Kudryavtsev
The first examples of exceptional terminal singularities are constructed.
On purely log terminal blow-ups
S. A. Kudryavtsev
In this paper we prove the existence of purely log terminal blow-up for Kawamata log terminal singularity and obtain the criterion for a singularity to be weakly exceptional in ter…