119 citations · 461 across the 49 of their papers we have counts for
Showing 2009 · math.AGShow all
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math.AG2009★ 1 cited
Five embeddings of one simple group
Ivan Cheltsov, Constantin Shramov
We propose a new method to study birational maps between Fano varieties based on multiplier ideal sheaves. Using this method, we prove equivariant birational rigidity of four Fano…
math.AG2009★ 41 cited
On exceptional quotient singularities
Ivan Cheltsov, Constantin Shramov
We study exceptional quotient singularities. In particular, we prove an exceptionality criterion in terms of the -invariant of Tian, and utilize it to classify four-dimensional…
math.AG2009
Del Pezzo Zoo
Ivan Cheltsov, Constantin Shramov
We study del Pezzo surfaces that are quasismooth and well-formed weighted hypersurfaces. In particular, we find all such surfaces whose alpha-invariant of Tian is greater than 2/3.