Core dimension group constraints for factors of sofic shifts
Autor: | Susan G. Williams, Paul Trow |
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Rok vydání: | 1993 |
Předmět: | |
Zdroj: | Ergodic Theory and Dynamical Systems. 13:213-224 |
ISSN: | 1469-4417 0143-3857 |
Popis: | We give constraints on the existence of factor maps between sofic shifts. These constraints yield examples of sofic shifts of entropy lognwhich do not factor onto the fulln-shift. We also show that any prime which divides the degree of an endomorphism of a sofic shift must divide the non-leading coefficients of the characteristic polynomial of the core matrix of the shift. |
Databáze: | OpenAIRE |
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