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arXiv · 0811.4286

Forgetful maps between Deligne-Mostow ball quotients

Martin Deraux
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Abstract

We study forgetful maps between Deligne-Mostow moduli spaces of weighted points on P^1, and classify the forgetful maps that extend to a map of orbifolds between the stable completions. The cases where this happens include the Livn\'e fibrations and the Mostow/Toledo maps between complex hyperbolic surfaces. They also include a retraction of a 3-dimensional ball quotient onto one of its 1-dimensional totally geodesic complex submanifolds.

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Martin Deraux. 2008-11-26. Forgetful maps between Deligne-Mostow ball quotients. https://doi.org/10.1007/s10711-010-9511-x

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