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For the pleasure of the eyes

Some phase portraits you may find beautiful or intriguing

Rajouté le vendredi 18 septembre 2015
Jean-René Chazottes , Marc Monticelli

All the differential equations we present on this website are physical or biological models. Here you can go through a gallery of phase portraits of two-dimensional systems we find beautiful, without getting preoccupied with what they could potentially model.

Most of the above differential equations are borrowed from the book Systèmes différentiels : étude graphique, by M. Artigue and V. Gautheron (Paris : CEDIC : Fernand Nathan, 1983), which is out-of-print.