تقرير
Birational maps from polarization and the preservation of measure and integrals
| العنوان: | Birational maps from polarization and the preservation of measure and integrals |
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| المؤلفون: | McLachlan, Robert I, McLaren, David I, Quispel, G R W |
| سنة النشر: | 2023 |
| المجموعة: | Computer Science Mathematics |
| مصطلحات موضوعية: | Mathematics - Dynamical Systems, Mathematics - Numerical Analysis |
| الوصف: | The main result of this paper is the discretization of Hamiltonian systems of the form $\ddot x = -K \nabla W(x)$, where $K$ is a constant symmetric matrix and $W\colon\mathbb{R}^n\to \mathbb{R}$ is a polynomial of degree $d\le 4$ in any number of variables $n$. The discretization uses the method of polarization and preserves both the energy and the invariant measure of the differential equation, as well as the dimension of the phase space. This generalises earlier work for discretizations of first order systems with $d=3$, and of second order systems with $d=4$ and $n=1$. Comment: Updated to final pre-publication version |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2303.04300 |
| رقم الأكسشن: | edsarx.2303.04300 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |