## In this paper, for a prescribed real spectrum, using properties of the circulant matrices and of the symmetric persymmetric matrices, we derive a fast and stable algorithm to construct a symmetric nonnegative matrix which realizes the spectrum. The algorithm is based on the fast Fourier transfo
A note on the construction of a positive oscillatory matrix with a prescribed spectrum
✍ Scribed by O. Rojo; R. Soto; J. Egaña
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 467 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0898-1221
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✦ Synopsis
A necessary and sufficient condition for an n-tuple of real numbers (~1, ~2 .... , An) to be the spectrum of an oscillatory matrix is that
Some methods of constructing a positive symmetric oscillatory matrix with spectrum a ----{A1, A2, ..., An} are suggested for theorems concerning oscillatory matrices. In this work, we present a new procedure of constructing such a matrix which is numerically stable and appears to be less expensive.
📜 SIMILAR VOLUMES
wh'ere the critical temperature Tc has been introduced. Equation (3) leads to a positive value of vm,n only when 27 r< Tc. In this case there exists a smallest value of w 2 on an isotherm. For T= Te we get, from equation ( 3), vm,n > vc. That leads to pm,n <p~, contrary to the expectation of Mannhe