Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Boundary Harnack Inequality for alpha-harmonic functions on the
  Sierpi\'nski triangle   We prove an uniform boundary Harnack inequality for nonnegative functions
harmonic with respect to $\alpha$-stable process on the Sierpi{\'n}ski
triangle, where $\alpha \in (0, 1)$. Our result requires no regularity
assumptions on the domain of harmonicity.

16
The categories of this paper are: stat
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The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga