Title:
Central
Extensions of Gerbes
Authors:
Amnon
Yekutieli
Publication
status:
appeared in Advances
in Mathematics 225,
Issue 1 (2010), 445-486.
Abstract:
We
introduce the notion of central extension of gerbes on a topological
space.
We then show that there are obstruction classes to lifting
objects and
isomorphisms in a central extension. We also discuss
pronilpotent gerbes.
These
results are used in a subsequent paper to study twisted deformation
quantization on algebraic varieties.
Electronic
Preprint:
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pdf
file
(acrobat)
updated 22 Sep 2010