Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A remark on Chapple-Euler Theorem in non Euclidean geometry   In non-Euclidean geometry, there are several known correspondings to
Chapple-Euler Theorem. This remark shows that those results yield expressions
corredponding to the well-known formula $d=\sqrt{R(R-2r)}$.

0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org