Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Affine $\Lambda$-buildings, ultrapowers of Lie groups and Riemannian
  symmetric spaces: an algebraic proof of the Margulis conjecture   In this paper, we give a general group-theoretic construction of affine
$\RR$-buildings, and more generally, of affine $\Lambda$-buildings, associated
to semisimple Lie groups over nonarchimedean real closed fields. The
construction of Kleiner-Leeb using the asymptotic cone of a Riemannian
symmetric space appears as a special case. The explicit knowledge of the
building arising here as the asymptotic cone simplifies the proof of the
Margulis conjecture due to Kleiner-Leeb.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
3
The categories of this paper are: physics