Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ricci Flow and Entropy Model for Avascular Tumor Growth and Decay
  Control   Prediction and control of cancer invasion is a vital problem in medical
science. This paper proposes a modern geometric Ricci-flow and entropy based
model for control of avascular multicellular tumor spheroid growth and decay.
As a tumor growth/decay control tool, a monoclonal antibody therapy is
proposed.
  Keywords: avascular tumor growth and decay, multicellular tumor spheroid,
Ricci flow and entropy, nonlinear heat equation, monoclonal antibody cancer
therapy

29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph