for ||y || ^ ôo as x tends to infinity in the region Im(x) ^ R0. The coefficients fk(y) are assumed to be holomorphic for ||y|| ;£ 50. Let X, be the eigenvalues of the matrix foy(0). We shall make the following assumptions: (i) /o(0) = 0, (ii)l< |xx|< |x2|< ... < |x„|, (iü)n?=ii^ip,^i^i for j = 1,2, • • -, re and ^UiPi ^ 2, where p, are nonnegative integers. If /o(0) = 0 and X¡ ?¿ 1, we can det...

We obtain some oscillation criteria for solutions of the nonlinear delay difference equation of the form xn+1−xn+pn ∏m j=1x αj n−kj = 0. 2000 Mathematics Subject Classification. 39A10.

This article initiates the study of nonlinear elliptic partial difference equations (PdE) on graphs. We seek solutions u : V → R to the semilinear elliptic difference equation −Lu + f(u) = 0 on a graph G = (V,E), where L is the (negative) Laplacian on the graph G. We extend techniques used to prove existence theorems and derive numerical algorithms for the partial differential equation (PDE) ∆u...

Using the method of Lyapunov functionals construction, it is shown that investigation of stability in probability of nonlinear stochastic difference equation with order of nonlinearity more than one can be reduced to the investigation of asymptotic mean square stability of the linear part of this equation. Difference equations usually appear by investigation of systems with discrete time or by ...