Stable modification of relative curves

Michael Temkin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We generalize theorems of Deligne-Mumford and de Jong on semi-stable modifications of families of proper curves. The main result states that after a generically étale alteration of the base any (not necessarily proper) family of multipointed curves with semi-stable generic fiber admits a minimal semi-stable modification. The latter can also be characterized by the property that its geometric fibers have no certain exceptional components. The main step of our proof is uniformization of one-dimensional extensions of valued fields. Riemann-Zariski spaces are then used to obtain the result over any integral base.

Original languageAmerican English
Pages (from-to)603-677
Number of pages75
JournalJournal of Algebraic Geometry
Issue number4
StatePublished - 2010


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