A recent supplement to the journal of the Czechoslovak Association for Cybernetics, Kybernetika, Vol. 24, 1988, pp. 3–24, which was published under the auspices of the Czechoslovak Academy of Sciences, was concerned with the use of the multidimensional z‐transform in the solution of partial difference equations. Written by Dr Jiri Gregor it gives a survey of (generalised) multidimensional z‐transform (n‐D‐z transform) method and its use in the solution of linear partial difference equations with constant coefficients, as well as systems of such equations, whose solutions the author calls sequences. He says that this theory is aimed at forming a basis of multidimensional digital system theory which attracted wide and increasing attention in the last decade.
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