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A moment theorem for completely hyperexpansive operators

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Abstract

Given a family \( \{ A_m^x \} _{\mathop {m \in \mathbb{Z}_ + ^d }\limits_{x \in X} } \) (X is a non-empty set) of bounded linear operators between the complex inner product space \( \mathcal{D} \) and the complex Hilbert space ℌ we characterize the existence of completely hyperexpansive d-tuples T = (T 1, … , T d ) on ℌ such that A xm = T m A x0 for all m ∊ ℤ d+ and xX.

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References

  1. A. Athavale, On completely hyperexpansive operators, Proc. Amer. Math. Soc., 124 (1996), 3745–3752.

    Article  MATH  MathSciNet  Google Scholar 

  2. A. Athavale, The complete hyperexpansivity analog of the Embry conditions, Studia Math., 154 (2003), 233–242.

    Article  MATH  MathSciNet  Google Scholar 

  3. A. Athavale and V. M. Sholapurkar, Completely hyperexpansive operator tuples, Positivity, 3 (1999), 245–253.

    Article  MATH  MathSciNet  Google Scholar 

  4. C. Berg, J. P. R. Christensen and P. Ressel, Harmonic Analysis on Semigroups, Springer-Verlag (New York, 1984).

    MATH  Google Scholar 

  5. P. Gãvruţã and D. Pãunescu, Sebestyén’s moment problem and regular dilations, Acta Math. Hungar., 94 (2002), 223–232.

    Article  MATH  MathSciNet  Google Scholar 

  6. Z. J. Jabłoński, Complete hyperexpansivity, subnormality and inverted boundedness conditions, Integral Equations Operator Theory, 44 (2002), 316–336.

    Article  MATH  MathSciNet  Google Scholar 

  7. Z. J. Jabłoński, Hyperexpansive composition operators, Math. Proc. Camb. Phil. Soc., 135 (2003), 513–526.

    Article  MATH  Google Scholar 

  8. Z. J. Jabłoński, Hyperexpansive operator valued unilateral weighted shifts, Glasgow Math. J., 46 (2004), 405–416.

    Article  MATH  Google Scholar 

  9. Z. J. Jabłoński, Moment problem with contractive solutions — the regular case, Proc. Amer. Math. Soc., 135 (2007), 2811–2819.

    Article  MATH  MathSciNet  Google Scholar 

  10. Z. J. Jabłoński and J. Stochel, Unbounded 2-hyperexpansive operators, Proc. Edinburgh Math. Soc., 44 (2001), 613–629.

    Article  MATH  Google Scholar 

  11. Z. J. Jabłoński and J. Stochel, Subnormality and operator multidimensional moment problems, J. London Math. Soc., 71 (2005), 438–466.

    Article  MATH  MathSciNet  Google Scholar 

  12. Z. J. Jabłoński, J. Stochel and F. H. Szafraniec, Unitary propagation of operator data, Proc. Edinburgh Math. Soc., 50 (2007), 689–699.

    MATH  Google Scholar 

  13. Z. J. Jabłoński, I. B. Jung and J. Stochel, Backward extensions of hyperexpansive operators, Studia Math., 173 (2006), 223–257.

    Google Scholar 

  14. D. Popovici, Bi-dimensional moment problems and regular dilations, in: Operator Theory: Adv. Appl., 163, Birkhäuser (Basel, 2005), pp. 257–274.

    Google Scholar 

  15. D. Popovici, Dilatable solutions for some operator moment problems, preprint 2005.

  16. D. Popovici and Z. Sebestyén, Sebestyén moment problem: the multi-dimensional case, Proc. Amer. Math. Soc., 132 (2003), 1029–1035.

    Article  Google Scholar 

  17. D. Popovici and Z. Sebestyén, Positive definite functions and Sebestyén’s operator moment problem, Glasg. Math. J., 47 (2005), 471–488.

    Article  MATH  MathSciNet  Google Scholar 

  18. Z. Sebestyén, Moment theorems for operators of Hilbert space, Acta Sci. Math. (Szeged), 44 (1982), 165–171.

    MATH  MathSciNet  Google Scholar 

  19. Z. Sebestyén, Moment theorems for operators on Hilbert space. II, Acta Sci. Math. (Szeged), 47 (1984), 101–106.

    MATH  MathSciNet  Google Scholar 

  20. V. M. Sholapurkar and A. Athavale, Completely and alternatingly hyperexpansive operators, J. Operator Theory, 43 (2000), 43–68.

    MATH  MathSciNet  Google Scholar 

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Correspondence to Z. J. Jabłoński.

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This work was supported by the MNiSzW grant N201 026 32/1350.

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Jabłoński, Z.J. A moment theorem for completely hyperexpansive operators. Acta Math Hung 120, 21–28 (2008). https://doi.org/10.1007/s10474-007-7077-3

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  • DOI: https://doi.org/10.1007/s10474-007-7077-3

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