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math.AG2002★ 1 cited
Specialization of zero cycles
János Kollár
The paper has two parts. First we prove that the specialization maps on R-equivalence and on the Chow group of zero cycles are isomorphisms for families over a local, Henselian, De…
math.AG2002
Rationally connected varieties and fundamental groups
János Kollár
Let U be an open subset of a unirational variety (or more generally of a separably rationally connected variety). We prove that there is rational curve C in U such that the fundame…