Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the geometric simple connectivity of open manifolds   One proves that there exists an obstruction to an open simply connected
$n$-manifold of dimension $n\geq 5$ being geometrically simply connected. In
particular there exist uncountably many simply connected $n$-manifolds which
are not w.g.s.c. One proves that for $n\neq 4$ an $n$-manifold proper homotopy
equivalent to a w.g.s.c. polyhedron is w.g.s.c. (for $n=4$ it is only end
compressible). We analyze further the case $n=4$ and Po\'enaru's conjecture.

9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc