[conferences > jmm2013]

Slides from the Witt Vectors, Lifting and Descent Special Session for the Joint Mathematics Meeting in San Diego in 2013.

Fields of Definition of G-Galois Branched Covers of the Projective Line.
Hilaf Hasson, Pennsylvania State University

Geometrizing quasi-characters of tori.
Clifton Cunningham, University of Calgary
David Roe, PIMS/University of Calgary

Differential Modular forms and Hecke Operators.
Arnab Saha, Australian National University

The Oort conjecture on lifting covers of curves.
Andrew Obus, Columbia University

Liftings of Elliptic and Hyperelliptic Curves.
Luis Finotti, University of Tennessee

Derived Invariants of Calabi-Yau Threefolds in Positive Characteristic.
Matthew Ward, University of Washington

A Torsor of Lifts of The Frobenius (in characteristic zero). (pdf coming)
Taylor Dupuy, University of New Mexico

Witt-Burnside rings and rings of p-adic functions.
Lance Edward Miller*, University of Utah
Benjamin Steinhurst, Cornell

Witt vectors and Total Positivity
James M Borger, Australian National University

Differential lifts and differential symmetries.

Alexandru Buium, University of New Mexico, Albuquerque

Base rings for global $(\varphi, \Gamma)$-modules.
Christopher Davis, University of California, Irvine

Towards global $(\varphi, \Gamma)$-modules and comparison isomorphisms.
Kiran S. Kedlaya, University of California, San Diego

Overconvergent de Rham-Witt cohomology for Algebraic Stacks.

David Zureick-Brown*, Emory University
Christopher Davis, UC Irvine

Lambda structures on stacks.
Lance Gurney, Australian National University