44 citations · 98 across the 16 of their papers we have counts for
4 papers · 2 filters
Quotients by finite equivalence relations
János Kollár
This note studies the existence of quotients by finite set theoretic equivalence relations. May 18: Substantial revisions with a new appendix by C. Raicu
Cremona transformations and diffeomorphisms of surfaces
János Kollár, Frédéric Mangolte
We show that the action of Cremona transformations on the real points of quadrics exhibits the full complexity of the diffeomorphisms of the sphere, the torus, and of all non-orien…
Birational rigidity of Fano varieties and field extensions
János Kollár
The aim of this note is to settle some foundational questions about the behavior of birational rigidity in extensions of algebraically closed fields.
Which powers of holomorphic functions are integrable?
János Kollár
We show that every limit of log canonical thresholds of n-variable functions is also a log canonical threshold of an (n-1)-variable function.