Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Locating conical degeneracies in the spectra of parametric self-adjoint
  matrices   A simple iterative scheme is proposed for locating the parameter values for
which a 2-parameter family of real symmetric matrices has a double eigenvalue.
The convergence is proved to be quadratic. An extension of the scheme to
complex Hermitian matrices (with 3 parameters) and to location of triple
eigenvalues (5 parameters for real symmetric matrices) is also described.
Algorithm convergence is illustrated in several examples: a real symmetric
family, a complex Hermitian family, a family of matrices with an "avoided
crossing" (no covergence) and a 5-parameter family of real symmetric matrices
with a triple eigenvalue.

8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph