Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The 1-type of a Waldhausen K-theory spectrum   We give a small functorial algebraic model for the 2-stage Postnikov section
of the K-theory spectrum of a Waldhausen category and use our presentation to
describe the multiplicative structure with respect to biexact functors.

32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga