Abstract
In this paper, Friedland’s entropy for Z<sub>+</sub><sup><italic>k</italic></sup>-actions on tori is investigated. For a Z<sub>+</sub><sup><italic>k</italic></sup>-action on torus generated by pairwise different, commuting non-singular integer matrices, a formula of Friedland’s entropy is obtained via the relative variational principle for the related skew product transformation and topological pressure.
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