Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Guiding-center recursive Vlasov and Lie-transform methods in plasma
  physics   The gyrocenter phase-space transformation used to describe nonlinear
gyrokinetic theory is rediscovered by a recursive solution of the Hamiltonian
dynamics associated with the perturbed guiding-center Vlasov operator. The
present work clarifies the relation between the derivation of the gyrocenter
phase-space coordinates by the guiding-center recursive Vlasov method and the
method of Lie-transform phase-space transformations.

13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th