UC Berkeley

Commutative Algebra and Algebraic Geometry Seminar

April 05, 2016

939 Evans Hall

3:45PM: Liftability of varieties in characteristic p.

Piotr Achinger

Many “pathologies” of varieties in characteristic p do not occur if the variety in question lifts to characteristic zero, or at least if it lifts modulo p^2. We will review classical and recent results on liftable varieties, discuss liftability of Frobenius split varieties, and present some new (quite elementary) examples of non-liftable varieties. This is joint work with Maciej Zdanowicz.

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