4 citations · 4 across the 2 of their papers we have counts for
3 papers
Meromorphic first integrals of analytic diffeomorphisms
Antoni Ferragut, Armengol Gasull, Xiang Zhang
We give an upper bound for the number of functionally independent meromorphic first integrals that a discrete dynamical system generated by an analytic map can have in a neighb…
Quadratic Planar Differential Systems with Algebraic Limit Cycles via Quadratic Plane Cremona Maps
Maria Alberich-Carramiñana, Antoni Ferragut, Jaume Llibre
In this paper we show how we can transform quadratic systems into new quadratic systems after some kind of birational transformations, the quadratic plane Cremona maps. We afterwar…
Analytic integrability of the Bianchi Class A cosmological models with 0<= k<1
Antoni Ferragut, Jaume Llibre, Chara Pantazi
There are many works studying the integrability of the Bianchi class A cosmologies with k=1. Here we characterize the analytic integrability of the Bianchi class A cosmological mod…