R. Johansen

activity

20092025

most citedOn Flow Equivalence of Sofic Shifts

3 citations · 5 across the 5 of their papers we have counts for

collaborators

Showing 2015Show all

2 papers · 1 filter

math.RA2015★ 2 cited

The Cuntz splice does not preserve $*$ -isomorphism of Leavitt path algebras over $Z$

Rune Johansen, Adam P. W. Sørensen

We show that the Leavitt path algebras $L_{2, Z}$ and $L_{2 -, Z}$ are not isomorphic as $*$ -algebras. There are two key ingredients in the proof. One is a partial a…

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 $2$ -sofic. Flow invariants based on the…

The Cuntz splice does not preserve ∗-isomorphism of Leavitt path algebras over Z

Flow equivalence of sofic beta-shifts

The Cuntz splice does not preserve $*$ -isomorphism of Leavitt path algebras over $Z$