Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bernstein-type techniques for 2D free boundary graphs   We prove an a-priori bound for the Lipschitz constant of a smooth one-phase
free boundary graph F(u) in two dimensions. The function u satisfies a fully
nonlinear elliptic equation in its positive side, and the gradient of u is
equal to 1 on F(u).

19
The categories of this paper are: eess
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The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn