Oscillation criteria of a class of partial difference equations with delays

This paper is concerned with the linear delay partial difference equation aAm+1,n+1 + bAm+1,n + cAnm,n+l − dAm,n +pm,nA m−σ,n−τ = 0, where σ and τ are two nonnegative integers, a, b, c, and d are positive constants, and {pi,j i, j ε N0 is a double real sequence. Sufficient conditions for this equation to be oscillatory are derived.