D. Takahashi et J. Matsukidaira, BOX AND BALL SYSTEM WITH A CARRIER AND ULTRADISCRETE MODIFIED KDV EQUATION, Journal of physics. A, mathematical and general, 30(21), 1997, pp. 733-739
A new soliton cellular automaton is proposed. It is defined by an arra
y of an infinite number of boxes, a finite number of balls and a carri
er of balls. Moreover, it reduces to a discrete equation obtained from
the discrete modified Korteweg-de Vries equation through a limit. An
algebraic expression of soliton solutions is also proposed.