“Recurrence Equations”, An Integrable System
“Recurrence Equations”, An Integrable System
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“递归方程”,一个可积系统
DOI:
10.1143/jpsj.71.2867
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发表时间:
2002
影响因子:
1.7
通讯作者:
H. Yahagi
中科院分区:
文献类型:
--
作者:
R. Hirota;H. Yahagi
We investige discrete equations which return to the initial states after a finite time regardless of the initial values, which we call “recurrence equations”. The recurrence equation exhibits conserved quantities which are expressed by the fundamental symmetric polynomials of solutions, x n +1 , x n +2 ,..., x n + N to the equations of period N . We show that the recurrence equation is integrable by using algebraic entropy and the conserved quantities. We present new recurrence equations of order k ( k ≥2) which have periods k +1 and 2 k +2, respectively.