Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on L. Zhou's result on Finsler surfaces with $K = 0$ and $J = 0$   In this note, we show that the examples of non Berwaldian Landsberg surfaces
with vanishing flag curvature, obtained in \cite{Zhou}, are in fact Berwaldian.
Consequently, Bryant's claim is still unverified.

23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph