Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterization of Left Ventricular Hypertrophy via Fractional
  Derivatives   In this paper, we have used the concepts of the fractional derivative of
rough curves to characterize ECG of LVH patients and compared the results with
normal ECGs. In mathematical language, an ECG is a rough curve having Q, R, S
points as non-differentiable points where classical derivatives do not exist
but fractional derivatives exist. We have calculated both left and right
modified Riemann-Liouville fractional derivatives and their differences termed
as phase transition at those non-differentiable points of V1, V2, V5, and V6
leads.Investigation shows that phase transition is higher for LVH patients than
normal ones. This may be a method of determination of risk factor of LVH
patients before doing Echocardiogram.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org