Inequalities concerning polar derivative of polynomials

Arty Ahuja; K. Dewan; Sunil Hans

Annales UMCS, Mathematica (2011)

  • Volume: 65, Issue: 1, page 1-9
  • ISSN: 2083-7402

Abstract

top
In this paper we obtain certain results for the polar derivative of a polynomial [...] , having all its zeros on [...] which generalizes the results due to Dewan and Mir, Dewan and Hans. We also obtain certain new inequalities concerning the maximum modulus of a polynomial with restricted zeros.

How to cite

top

Arty Ahuja, K. Dewan, and Sunil Hans. "Inequalities concerning polar derivative of polynomials." Annales UMCS, Mathematica 65.1 (2011): 1-9. <http://eudml.org/doc/267631>.

@article{ArtyAhuja2011,
abstract = {In this paper we obtain certain results for the polar derivative of a polynomial [...] , having all its zeros on [...] which generalizes the results due to Dewan and Mir, Dewan and Hans. We also obtain certain new inequalities concerning the maximum modulus of a polynomial with restricted zeros.},
author = {Arty Ahuja, K. Dewan, Sunil Hans},
journal = {Annales UMCS, Mathematica},
keywords = {Polynomials; maximum modulus; inequalities in the complex domain; polar derivative; inequalities; polynomials; derivative of polynomials},
language = {eng},
number = {1},
pages = {1-9},
title = {Inequalities concerning polar derivative of polynomials},
url = {http://eudml.org/doc/267631},
volume = {65},
year = {2011},
}

TY - JOUR
AU - Arty Ahuja
AU - K. Dewan
AU - Sunil Hans
TI - Inequalities concerning polar derivative of polynomials
JO - Annales UMCS, Mathematica
PY - 2011
VL - 65
IS - 1
SP - 1
EP - 9
AB - In this paper we obtain certain results for the polar derivative of a polynomial [...] , having all its zeros on [...] which generalizes the results due to Dewan and Mir, Dewan and Hans. We also obtain certain new inequalities concerning the maximum modulus of a polynomial with restricted zeros.
LA - eng
KW - Polynomials; maximum modulus; inequalities in the complex domain; polar derivative; inequalities; polynomials; derivative of polynomials
UR - http://eudml.org/doc/267631
ER -

References

top
  1. Bernstein, S., Lecons sur les propriétés extrémales et la meilleure approximation desfonctions analytiques d'une variable réele, Gauthier Villars, Paris, 1926 (French). Zbl52.0256.02
  2. Chan, T. N., Malik, M. A., On Erdös-Lax theorem, Proc. Indian Acad. Sci. 92 (3) (1983), 191-193. Zbl0551.30002
  3. Dewan, K. K., Hans, S., On maximum modulus for the derivative of a polynomial, Ann. Univ. Mariae Curie-Skłodowska Sect. A 63 (2009), 55-62. 
  4. Dewan, K. K., Mir, A., Note on a theorem of S. Bernstein, Southeast Asian Bulletin of Math. 31 (2007), 691-695. Zbl1150.30001
  5. Govil, N. K., On the theorem of S. Bernstein, J. Math. Phys. Sci. 14 (1980), 183-187. Zbl0444.30007
  6. Govil, N. K., Rahman, Q. I., Functions of exponential type not vanishing in a half plane and related polynomials, Trans. Amer. Math. Soc. 137 (1969), 501-517. Zbl0189.08502
  7. Jain, V. K., On polynomials having zeros in closed exterior or interior of a circle, Indian J. Pure Appl. Math. 30 (1999), 153-159. Zbl0960.30004
  8. Malik, M. A., On the derivative of a polynomial, J. London Math. Soc. 1 (1969), 57-60. Zbl0179.37901
  9. Mir, A., On extremal properties and location of zeros of polynomials, Ph.D. Thesis submitted to Jamia Millia Islamia, New Delhi, 2002. 
  10. Qazi, M. A., On the maximum modulus of polynomials, Proc. Amer. Math. Soc. 115 (1992), 337-343. Zbl0772.30006

NotesEmbed ?

top

You must be logged in to post comments.

To embed these notes on your page include the following JavaScript code on your page where you want the notes to appear.

Only the controls for the widget will be shown in your chosen language. Notes will be shown in their authored language.

Tells the widget how many notes to show per page. You can cycle through additional notes using the next and previous controls.

    
                

Note: Best practice suggests putting the JavaScript code just before the closing </body> tag.