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Bowen-Franks groups as conjugacy invariants for $\mathbb{T}^{n}$ automorphisms

P. Martins Rodrigues·J. Sousa Ramos
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Abstract

The role of generalized Bowen-Franks groups (BF-groups) as topological conjugacy invariants for $\mathbb{T}^{n}$ automorphisms is studied. Using algebraic number theory, a link is established between equality of BF-groups for different automorphisms ($BF$-equivalence) and an identical position in a finite lattice ($\mathcal{L}$-equivalence). Important cases of equivalence of the two conditions are proved. Finally, a topological interpretation of the classical BF-group $\mathbb{Z}% ^{n}/\mathbb{Z}^{n}(I-A)$ in this context is presented.

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P. Martins Rodrigues, J. Sousa Ramos. 2003-03-15. Bowen-Franks groups as conjugacy invariants for $\mathbb{T}^{n}$ automorphisms. https://arxiv.org/abs/math/0303185

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