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This book lays the foundation for a theory of uniformization of
p-adic hyperbolic curves and their moduli. On one hand, this theory
generalizes the Fuchsian and Bers uniformizations of complex
hyperbolic curves and their moduli to nonarchimedian places. That
is why in this book, the theory is referred to as p-adic
Teichmuller theory, for short. On the other hand, the theory may be
regarded as a fairly precise hyperbolic analog of the Serre-Tate
theory of ordinary abelian varieties and their moduli. The theory
of uniformization of p-adic hyperbolic curves and their moduli was
initiated in a previous work by Mochizuki. And in some sense, this
book is a continuation and generalization of that work. This book
aims to bridge the gap between the approach presented and the
classical uniformization of a hyperbolic Riemann surface that is
studied in undergraduate complex analysis. Features: Presents a
systematic treatment of the moduli space of curves from the point
of view of p-adic Galois representations. Treats the analog of
Serre-Tate theory for hyperbolic curves. Develops a p-adic analog
of Fuchsian and Bers uniformization theories. Gives a systematic
treatment of a ""nonabelian example"" of p-adic Hodge theory.
Titles in this series are co-published with International Press of
Boston, Inc., Cambridge, MA.
The present monograph further develops the study, via the
techniques of combinatorial anabelian geometry, of the profinite
fundamental groups of configuration spaces associated to hyperbolic
curves over algebraically closed fields of characteristic zero. The
starting point of the theory of the present monograph is a
combinatorial anabelian result which allows one to reduce issues
concerning the anabelian geometry of configuration spaces to issues
concerning the anabelian geometry of hyperbolic curves, as well as
to give purely group-theoretic characterizations of the cuspidal
inertia subgroups of one-dimensional subquotients of the profinite
fundamental group of a configuration space. We then turn to the
study of tripod synchronization, i.e., of the phenomenon that an
outer automorphism of the profinite fundamental group of a log
configuration space associated to a stable log curve induces the
same outer automorphism on certain subquotients of such a
fundamental group determined by tripods [i.e., copies of the
projective line minus three points]. The theory of tripod
synchronization shows that such outer automorphisms exhibit
somewhat different behavior from the behavior that occurs in the
case of discrete fundamental groups and, moreover, may be applied
to obtain various strong results concerning profinite Dehn
multi-twists. In the final portion of the monograph, we develop a
theory of localizability, on the dual graph of a stable log curve,
for the condition that an outer automorphism of the profinite
fundamental group of the stable log curve lift to an outer
automorphism of the profinite fundamental group of a corresponding
log configuration space. This localizability is combined with the
theory of tripod synchronization to construct a purely
combinatorial analogue of the natural outer surjection from the
etale fundamental group of the moduli stack of hyperbolic curves
over the field of rational numbers to the absolute Galois group of
the field of rational numbers.
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