Dirichlet series and uniform ergodic theorems for linear operators in Banach spaces

Takeshi Yoshimoto

Studia Mathematica (2000)

  • Volume: 141, Issue: 1, page 69-83
  • ISSN: 0039-3223

Abstract

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We study the convergence properties of Dirichlet series for a bounded linear operator T in a Banach space X. For an increasing sequence μ = μ n of positive numbers and a sequence f = f n of functions analytic in neighborhoods of the spectrum σ(T), the Dirichlet series for f n ( T ) is defined by D[f,μ;z](T) = ∑n=0∞ e-μnz fn(T), z∈ ℂ. Moreover, we introduce a family of summation methods called Dirichlet methods and study the ergodic properties of Dirichlet averages for T in the uniform operator topology.

How to cite

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Yoshimoto, Takeshi. "Dirichlet series and uniform ergodic theorems for linear operators in Banach spaces." Studia Mathematica 141.1 (2000): 69-83. <http://eudml.org/doc/216774>.

@article{Yoshimoto2000,
abstract = {We study the convergence properties of Dirichlet series for a bounded linear operator T in a Banach space X. For an increasing sequence $μ = \{μ_n\}$ of positive numbers and a sequence $f = \{f_n\}$ of functions analytic in neighborhoods of the spectrum σ(T), the Dirichlet series for $\{f_n(T)\}$ is defined by D[f,μ;z](T) = ∑n=0∞ e-μnz fn(T), z∈ ℂ. Moreover, we introduce a family of summation methods called Dirichlet methods and study the ergodic properties of Dirichlet averages for T in the uniform operator topology.},
author = {Yoshimoto, Takeshi},
journal = {Studia Mathematica},
keywords = {Abel method; uniform ergodicity; nilpotent operator; Dirichlet averages; power-boundedness},
language = {eng},
number = {1},
pages = {69-83},
title = {Dirichlet series and uniform ergodic theorems for linear operators in Banach spaces},
url = {http://eudml.org/doc/216774},
volume = {141},
year = {2000},
}

TY - JOUR
AU - Yoshimoto, Takeshi
TI - Dirichlet series and uniform ergodic theorems for linear operators in Banach spaces
JO - Studia Mathematica
PY - 2000
VL - 141
IS - 1
SP - 69
EP - 83
AB - We study the convergence properties of Dirichlet series for a bounded linear operator T in a Banach space X. For an increasing sequence $μ = {μ_n}$ of positive numbers and a sequence $f = {f_n}$ of functions analytic in neighborhoods of the spectrum σ(T), the Dirichlet series for ${f_n(T)}$ is defined by D[f,μ;z](T) = ∑n=0∞ e-μnz fn(T), z∈ ℂ. Moreover, we introduce a family of summation methods called Dirichlet methods and study the ergodic properties of Dirichlet averages for T in the uniform operator topology.
LA - eng
KW - Abel method; uniform ergodicity; nilpotent operator; Dirichlet averages; power-boundedness
UR - http://eudml.org/doc/216774
ER -

References

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  1. [1] T. M. Apostol, Mathematical Analysis, Addison-Wesley, Reading, MA, 1974. 
  2. [2] N. Dunford, Spectral theory I. Convergence to projection, Trans. Amer. Math. Soc. 54 (1943), 185-217. Zbl0063.01185
  3. [3] N. Dunford and J. T. Schwartz, Linear Operators I: General Theory, Pure Appl. Math., Interscience, New York, 1958. Zbl0084.10402
  4. [4] E. Hille, Remarks on ergodic theorems, Trans. Amer. Math. Soc. 57 (1945), 246-269. Zbl0063.02017
  5. [5] K. B. Laursen and M. Mbekhta, Operators with finite chain length and ergodic theorem, Proc. Amer. Math. Soc. 123 (1995), 3443-3448. Zbl0849.47008
  6. [6] M. Lin, On the uniform ergodic theorem, Proc. Amer. Math. Soc. 43 (1974), 337-340. Zbl0252.47004
  7. [7] M. Lin, On the uniform ergodic theorem II, ibid. 46 (1974), 217-225. 
  8. [8] M. Mbekhta et J. Zemánek, Sur le théorème ergodique uniforme et le spectre, C. R. Acad. Sci. Paris Sér. I Math. 317 (1993), 1155-1158. 
  9. [9] G. Szegő, Orthogonal Polynomials, Amer. Math. Soc. Colloq. Publ. 23, Providence, 1939. 
  10. [10] A. E. Taylor and D. C. Lay, Introduction to Functional Analysis, 2nd ed., Wiley, 1980. Zbl0501.46003
  11. [11] T. Yoshimoto, Uniform and strong ergodic theorems in Banach spaces, Illinois J. Math. 42 (1998), 525-543; Correction, ibid. 43 (1999), 800-801. Zbl0924.47005

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