Mathematics – Dynamical Systems
Scientific paper
2011-12-12
Mathematics
Dynamical Systems
Scientific paper
This investigation studies topological mixing and strong specification of two-dimensional shifts of finite type. Connecting operators are introduced to reduce the order of high-order transition matrices to yield lower-order transition matrices that are useful in establishing finitely checkable conditions for the primitivity of all transition matrices. Two kinds of sufficient condition for the primitivity of transition matrices are provided; (I) invariant diagonal cycles and (II) primitive commutative cycles. After primitivity is established, the corner-extendability and crisscross-extendability are introduced to demonstrate topological mixing. In addition to these sufficient conditions for topological mixing, the hole-filling condition implies the strong specification. All mentioned conditions are finitely checkable.
Ban Jung-Chao
Hu Wen-Guei
Lin Song-Sun
Lin Yin-Heng
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