An analytic proof of the stable reduction theorem

Math Ann. 2024;390(3):4245-4263. doi: 10.1007/s00208-024-02848-2. Epub 2024 Apr 16.

Abstract

The stable reduction theorem says that a family of curves of genus g 2 over a punctured curve can be uniquely completed (after possible base change) by inserting certain stable curves at the punctures. We give a new this result for curves defined over C , using the Kähler-Einstein metrics on the fibers to obtain the limiting stable curves at the punctures.