Albarakati, WafaaLloyd, N. G.Pearson, Jane M.2019-12-112019-12-112000-12-22Albarakati, W. A., Lloyd, N. G., & Pearson, J. M. (2000). Transformation to Lienard form. <i>Electronic Journal of Differential Equations, 2000</i>(76), pp. 1-11.1072-6691https://hdl.handle.net/10877/9044We show that certain two-dimensional differential systems can be transformed to a system of Lienard type. This enables known criteria for the existence of a centre for Lienard systems to be exploited, so extending the range of techniques which are available for proving that conditions which are known to be necessary for a centre are also sufficient.Text11 pages1 file (.pdf)enAttribution 4.0 InternationalOrdinary differential equationsPolynomial systemsLienard systemsArticle