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nlin.SI2001
Blending two discrete integrability criteria: singularity confinement and algebraic entropy
S. Lafortune, A. Ramani, B. Grammaticos +2
We confront two integrability criteria for rational mappings. The first is the singularity confinement based on the requirement that every singularity, spontaneously appearing duri…
nlin.SI2001
Linearisable systems and the Gambier approach
S. Lafortune, B. Grammaticos, A. Ramani
A systematic study of the discrete second order projective system is presented, complemented by the integrability analysis of the associated multilinear mapping. Moreover, we show…
nlin.SI2001
A Study of the Continuous and Discrete Gambier Systems
A. Ramani, B. Grammaticos, S. Lafortune
We present a systematic study of the Gambier system, which in the continuous case is given by two Riccati equations in cascade. We derive the condition for its integrability and sh…