Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extreme values and the level-crossing problem. An application to the
  Feller process   We review the question of the extreme values attained by a random process. We
relate it to level crossings either to one boundary (first-passage problems)
and two boundaries (escape problems). The extremes studied are the maximum, the
minimum, the maximum absolute value and the range or span. We specialize in
diffusion processes and present detailed results for the Wiener and Feller
processes.

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The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
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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: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: supr-con