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arXiv · 0902.1174

Semigroup identities in the monoid of two-by-two tropical matrices

Zur Izhakian·Stuart Margolis
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Abstract

The main result of the paper proves that the monoid of all 2 x 2 tropical matrices satisfies a non-trivial semigroup identity, unlike the case of matrices over infinite fields. We exploit a strong connection between the monoid of all 2 x 2 tropical matrices and the bicyclic monoid to show that a variant of Adian's identity for the bicyclic monoid holds in our case.We use generic matrices of tropical polynomials to prove our result.

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Zur Izhakian, Stuart Margolis. 2009-02-08. Semigroup identities in the monoid of two-by-two tropical matrices. https://arxiv.org/abs/0902.1174

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