Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $K_2$ of Kac-Moody Groups   Ulf Rehmann and Jun Morita, in their 1989 paper "A Matsumoto-type theorem for
Kac-Moody groups", gave a presentation of $K_2(A,F)$ for any generalised Cartan
matrix $A$ and field $F$. The purpose of this paper is to use this presentation
to compute $K_2(A,F)$ more explicitly in the case when $A$ is hyperbolic. In
particular, we shall show that these $K_2(A,F)$ can always be expressed as a
product of quotients of $K_2(F)$ and $K_2(2,F)$. Along the way, we shall also
prove a similar result in the case when $A$ has an odd entry in each column.

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The categories of this paper are: cs
28
The categories of this paper are: alg-geom
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex