Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Generalized Parameter Imbedding Method   The parameter imbedding method for the Fredholm equation converts it into an
initial value problem in its parameter $\lambda$. We establish the method for
general operator equations of the form $[I + \hat{f}(\lambda)]\psi = \phi $. It
is particularly useful for studying spontaneous symmetry breaking problems,
such as contained in the nonlinear Schwinger-Dyson equation.

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The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat
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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: chao-dyn
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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio