Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Construction of dynamical semigroups by a functional regularisation
  \`{a} la Kato   A functional version of the Kato one-parametric regularisation for the
construction of a dynamical semigroup generator of a relative bound one
perturbation is introduced. It does not require that the minus generator of the
unperturbed semigroup is a positivity preserving operator. The regularisation
is illustrated by an example of a boson-number cut-off regularisation.

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The categories of this paper are: adap-org
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The categories of this paper are: physics
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The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: stat
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: hep-th