29 citations · 62 across the 7 of their papers we have counts for
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math.DS2008★ 10 cited
Open maps between shift spaces
Uijin Jung
Given a code from a shift space to an irreducible sofic shift, any two of the following three conditions -- open, constant-to-one, (right or left) closing -- imply the third. If th…
math.DS2008★ 19 cited
On the existence of open and bi-continuing codes
Uijin Jung
Given an irreducible sofic shift X, we show that an an irreducible SFT Y of lower entropy is a factor of X if and only if it is a factor of X by an open bi-continuing code. If thes…