Skip to main content
Log in

Convergence of the Imaginary Parts of Simplest Fractions in L p ( ) for p < 1

  • Published:
Journal of Mathematical Sciences Aims and scope Submit manuscript

For p ∈ (1/2, 1), the L p ()-convergence of the series \( {\displaystyle \sum_{k=1}^{\infty}\left|\mathrm{I}\mathrm{m}{\left(t-{z}_k\right)}^{-1}\right|} \) is studied, where zk are some points on the complex plane. The problem is solved completely in the case where the sequence {Re zk} has no limit points. The case where this sequence has finitely many limit points is also studied.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. V. I. Danchenko, “Estimates for the distances from the poles of the logarithmic derivatives of polynomials to straight lines and circles,” Mat. Sb., 185, 63–80 (1994).

    Google Scholar 

  2. P. A. Borodin and O. N. Kosukhin, “On approximation by the simplest fractions on the real axis,” Vestn. Mosk. Univ. Ser. Mat. Mekh., 1, 3–8 (2005).

    MathSciNet  Google Scholar 

  3. V. Yu. Protasov, “Approximations by simple partial fractions and the Hilbert transform,” Izv. RAS, Ser. Mat., 73, 123–140 (2009).

    Article  MathSciNet  Google Scholar 

  4. I. R. Kayumov, “Convergence of series of simple partial fractions in L p (),” Mat. Sb., 202, 87–98 (2011).

    Article  MathSciNet  Google Scholar 

  5. I. R. Kayumov, “A necessary condition for convergence of simplest fractions in L p (),” Mat. Zametki, 92, 149–152 (2012).

    Article  MathSciNet  Google Scholar 

  6. V. I. Danchenko, “Convergence of simple partial fractions in L p (),” Mat. Sb., 201, 53–66 (2010).

    Article  MathSciNet  Google Scholar 

  7. G. H. Hardy, J. E. Littlewood, and G. Pólya, Inequalities [Russian translation], Moscow (1948).

  8. S. B. Stechkin, “On absolute convergence of orthogonal series,” Dokl. AN SSSR, 102, 37–40 (1955).

    MATH  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to I. R. Kayumov.

Additional information

Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 416, 2013, pp. 108–116.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Kayumov, I.R., Kayumova, A.V. Convergence of the Imaginary Parts of Simplest Fractions in L p ( ) for p < 1. J Math Sci 202, 553–559 (2014). https://doi.org/10.1007/s10958-014-2062-1

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10958-014-2062-1

Keywords

Navigation