Counting and ordering periodic stationary solutions of lattice Nagumo equations

Hermen Jan Hupkes; Leonardo Morelli; Petr Stehl\'ik; Vladim\'ir \v{S}v\'igler

arxiv: 1905.06107 · v1 · pith:XTB6WW72new · submitted 2019-05-15 · 🧮 math.DS · math.CO

Counting and ordering periodic stationary solutions of lattice Nagumo equations

Hermen Jan Hupkes , Leonardo Morelli , Petr Stehl\'ik , Vladim\'ir \v{S}v\'igler This is my paper

classification 🧮 math.DS math.CO

keywords nagumoperiodicsolutionsequationsstationaryableaccomplishbracelets

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We study the rich structure of periodic stationary solutions of Nagumo reaction diffusion equation on lattices. By exploring the relationship with Nagumo equations on cyclic graphs we are able to divide these periodic solutions into equivalence classes that can be partially ordered and counted. In order to accomplish this, we use combinatorial concepts such as necklaces, bracelets and Lyndon words.

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Counting and ordering periodic stationary solutions of lattice Nagumo equations

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