Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large scale geometry of negatively curved $\R^n \rtimes \R$   We classify all negatively curved $\R^n \rtimes \R$ up to quasiisometry. We
show that all quasiisometries between such manifolds (except when they are
biLipschitz to the real hyperbolic spaces) are almost similarities. We prove
these results by studying the quasisymmetric maps on the ideal boundary of
these manifolds.

19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th