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    政大機構典藏 > 理學院 > 應用數學系 > 期刊論文 >  Item 140.119/130193


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    題名: Factor map, diamond and density of pressure functions
    作者: 班榮超
    Ban, Jung-Chao
    Chang, Chih-Hung
    貢獻者: 應數系
    關鍵詞: Sofic shift
    日期: 2011-05
    上傳時間: 2020-06-22 13:41:12 (UTC+8)
    摘要: Letting π: X → Y be a one-block factor map and Φ be an almostadditive potential function on X, we prove that if π has diamond, then the pressure P(X, Φ) is strictly larger than P(Y, πΦ). Furthermore, if we define the ratio ρ(Φ) = P(X, Φ)/P(Y, πΦ), then ρ(Φ) > 1 and it can be proved that there exists a family of pairs {(πi,Xi)}ki=1 such that πi: Xi → Y is a factor map between Xi and Y, Xi ⊆ X is a subshift of finite type such that ρ(πi,Φ{pipe}Xi) (the ratio of the pressure function for P(Xi,Φ{pipe}Xi) and P(Y, πΦ)) is dense in [1, ρ(Φ)]. This extends the result of Quas and Trow for the entropy case.
    關聯: Proceedings of the American Mathematical Society, Vol.139, No.11, pp.3985-3997
    資料類型: article
    DOI 連結: http://dx.doi.org/10.1090/S0002-9939-2011-10803-7
    DOI: 10.1090/S0002-9939-2011-10803-7
    顯示於類別:[應用數學系] 期刊論文

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