Mat. Sb., 2009 Volume 200, Number 2,Pages 107–128(Mi sm3922)
Conditions for the invertibility of the nonlinear difference operator
$(\mathscr Rx)(n)=H(x(n),x(n+1))$, $n\in\mathbb Z$, in the space of bounded number sequences
Abstract:
Necessary and sufficient conditions are found for the invertibility of the nonlinear difference operator
$$
(\mathscr Rx)(n)=H(x(n),x(n+1)),\qquad n\in\mathbb Z,
$$
in the space of bounded two-sided number sequences. Here $H\colon \mathbb R^2\to \mathbb R $ is a continuous function.
Bibliography: 29 titles.
Keywords:invertibility of a nonlinear operator, telegraph equations.