Advances in Difference Equations
Volume 2006 (2006), Article ID 19276, 14 pages

One parameter family of linear difference equations and the stability problem for the numerical solution of ODEs

L. Aceto,1 R. Pandolfi,2 and D. Trigiante3

1Dipartimento di Matematica Applicata “U. Dini,”, Università di Pisa, Via Diotisalvi 2, Pisa 56126, Italy
2Dipartimento di Matematica “U. Dini,”, Università di Firenze, Viale Morgagni 67/A, Firenze 50134, Italy
3Dipartimento di Energetica “S. Stecco,”, Università di Firenze, Via C. Lombroso 6/17, Firenze 50134, Italy

Received 21 July 2004; Accepted 4 October 2004

Copyright © 2006 L. Aceto et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The study of the stability properties of numerical methods leads to considering linear difference equations depending on a complex parameter q. Essentially, the associated characteristic polynomial must have constant type for q. Usually such request is proved with the help of computers. In this paper, by using the fact that the associated polynomials are solutions of a “Legendre-type” difference equation, a complete analysis is carried out for the class of linear multistep methods having the highest possible order.