Skip to main content

Integral Mean Estimates for a Polynomial with Restricted Zeros

  • Chapter
  • First Online:
Book cover Current Topics in Pure and Computational Complex Analysis

Part of the book series: Trends in Mathematics ((TM))

  • 752 Accesses

Abstract

In this paper, we prove some \(L^{q},~q\ge 0\) mean inequalities for a class of polynomials

$$\begin{aligned} \textbf{P}_{n,\mu}:=\bigg\{P(z)=a_{n}z^{n}+\sum\limits_{j=\mu}^{n}a_{n-j}z^{n-j},~~1\le\mu\le n\bigg\}\end{aligned}$$

having all zeros in \(|z|\le k,~k\le 1.\)

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

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 39.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 54.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 54.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Aziz, A.: Integral mean estimates for polynomials with restricted zeros. J. Approx. Theory. 55, 232–239 (1998)

    Article  MathSciNet  Google Scholar 

  2. Aziz, A., Dawood, Q.M.: Inequalities for a polynomial and its derivative. J. Approx. Theory. 53, 155–162 (1988)

    Article  MathSciNet  Google Scholar 

  3. Aziz, A., Rather, N.A.: New integral mean estimates for polynomials. Proc. Indian Acad. Sci. (Math. Sci) 109, 65–74 (1999)

    Article  MATH  MathSciNet  Google Scholar 

  4. Aziz, A., Rather, N.A.: Some Zygmund type L qinequalities for polynomials. J. Math. Anal. Appl. 289, 14–29 (2004)

    Article  MATH  MathSciNet  Google Scholar 

  5. Aziz, A., Shah, W.M.: An integral mean estimate for a polynomial. Indian J. Pure and Appl. Math. 28, 1413–1419 (1997)

    MATH  MathSciNet  Google Scholar 

  6. Aziz, A., Shah, W.M.: Integral mean estimates for polynomials with restricted zeros. Math. Inequal. Appl. 4, 491–497 (2001)

    MATH  MathSciNet  Google Scholar 

  7. Aziz, A., Shah, W.M.: Inequalities for a polynomial and its derivatives. Math. Inequal. Appl. 7(3), 379–391 (2004)

    MATH  MathSciNet  Google Scholar 

  8. Govil, N.K.: Some inequalities for derivatives of polynomials. J. Approx. Theory. 66, 29–35 (1991)

    Article  MATH  MathSciNet  Google Scholar 

  9. Govil, N.K., Rahman, Q.I., Schmeisser, G.: On the derivative of a polynomial. Ill. J. Math. 23, 319–329 (1979)

    MATH  MathSciNet  Google Scholar 

  10. Hille, E.: Analytic Function Theory, vol.II. Ginn, New York (1962)

    Google Scholar 

  11. Lax, P.D.: Proof of a conjucture of P. Erdös on the derivative of a polynomial. Bull. Am. Math. Soc. (N.S) 50, 509–513 (1944)

    Article  MATH  MathSciNet  Google Scholar 

  12. Malik, M.A.: On the derivative of a polynomial. J. London Math. Soc. 1, 57–60(1969)

    Article  MATH  MathSciNet  Google Scholar 

  13. Malik, M.A.: New integral mean estimates for polynomials. Proc. Am. Math. Soc. 91, 281–284 (1984)

    Article  MATH  MathSciNet  Google Scholar 

  14. Turan, P.: Über die ableitung von polynomen, Composito Math. 7, 49–54 (1939)

    MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to A. Liman .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2014 Springer India

About this chapter

Cite this chapter

Liman, A., Shah, W. (2014). Integral Mean Estimates for a Polynomial with Restricted Zeros. In: Joshi, S., Dorff, M., Lahiri, I. (eds) Current Topics in Pure and Computational Complex Analysis. Trends in Mathematics. Birkhäuser, New Delhi. https://doi.org/10.1007/978-81-322-2113-5_11

Download citation

Publish with us

Policies and ethics