Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Surfaces of minimal degree of tame representation type and mutations of
  Cohen-Macaulay modules   We provide two examples of smooth projective surfaces of tame CM type, by
showing that any parameter space of isomorphism classes of indecomposable ACM
bundles with fixed rank and determinant on a rational quartic scroll in
projective 5-space is either a single point or a projective line. For surfaces
of minimal degree and wild CM type, we classify rigid Ulrich bundles as
Fibonacci extensions. For the rational normal scrolls S(2,3) and S(3,3), a
complete classification of rigid ACM bundles is given in terms of the action of
the braid group in three strands.

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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: bayes-an
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The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn