Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Courbure des tissus planaires d\'efinis implicitement par une \'equation
  diff\'erentielle polynomiale en y'. Programmation   The aim of this paper is mainly, after some theoretical explanations, to
provide a program on Maple for computing, whatever be d, the curvature of the
planar d-web implicitely defined by a differential equation F(x,y,y')=0, F
being polynomial of degree d with respect to y'.
  Moreover, we prove in the appendix a "concentration theorem" for any
calibrated ordinary $d$-web of codimension one in n-dimensional manifold (in
particular for any planar web). Its curvature matrix, relatively to an
"adapted" trivialization, is concentrated on the (n-2+k0)!/(n-2)!k0! last lines
(the last line if n=2), k0 denoting the integer such that
d=(n-1+k0)!/(n-1)!(k0)!$.

28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th