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math.DS2015
Flow equivalence of sofic beta-shifts
Rune Johansen
The Fischer, Krieger, and fiber product covers of sofic beta-shifts are constructed and used to show that every strictly sofic beta-shift is -sofic. Flow invariants based on the…
math.DS2013
Is Every Irreducible Shift of Finite Type Flow Equivalent to a Renewal System?
Rune Johansen
Is every irreducible shift of finite type flow equivalent to a renewal system? For the first time, this variation of a classic problem formulated by Adler is investigated, and seve…
math.DS2012★ 3 cited
On Flow Equivalence of Sofic Shifts
Rune Johansen
The flow equivalence of sofic shifts is examined using results about the structure of the corresponding covers. A canonical cover generalising the left Fischer cover to arbitrary s…