Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Artin characters, Hurwitz trees and the lifting problem   We study finite groups of automorphisms of the $p$-adic open disk. In
particular, we generalize results of Green, Matignon and Henrio from cyclic
groups of order $p$ to arbitrary finite groups. As an application, we produce a
counterexample to a question of Chinburg, Guralnick and Harbater, concerning
the local lifting problem for generalized quaternion groups.

31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
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The categories of this paper are: eess
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph