Some recent results on the Kahan-Hirota-Kimura discretization
- 👤 Speaker: Quipsel, R (La Trobe University)
- 📅 Date & Time: Friday 12 July 2013, 14:30 - 15:00
- 📍 Venue: Seminar Room 1, Newton Institute
Abstract
We show that Kahan’s discretization of quadratic vector fields is equivalent to a Runge- Kutta method. In case the vector field is Hamiltonian, with constant Poisson structure, the map determined by this discretization preserves a (modified) integral and a (modified) invariant measure. This produces large classes of integrable rational mappings, explaining some of the integrable cases that were previously known, as well as yielding many new ones.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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Quipsel, R (La Trobe University)
Friday 12 July 2013, 14:30-15:00