Convolution equations on lattices: periodic solutions with values in a prime characteristic field

Details Convolution equations on lattices: periodic solutions with values in a prime characteristic field Convolution equations on lattices: periodic solutions with values in a prime characteristic field

2006-06-29

arxiv.org/abs/math-ph/0606070v3

Physics

Mathematical Physics

30 pages, a new edition

Scientific paper

These notes are inspired by the theory of cellular automata. A linear cellular automaton on a lattice of finite rank or on a toric grid is a discrete dinamical system generated by a convolution operator with kernel concentrated in the nearest neighborhood of the origin. In the present paper we deal with general convolution operators. We propose an approach via harmonic analysis which works over a field of positive characteristic. It occurs that a standard spectral problem for a convolution operator is equivalent to counting points on an associate algebraic hypersurface in a torus according to the torsion orders of their coordinates.

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