Generalizations on the results of Cao and Zhang

Sujoy Majumder; Rajib Mandal

Mathematica Bohemica (2022)

  • Volume: 147, Issue: 1, page 65-94
  • ISSN: 0862-7959

Abstract

top
We establish some uniqueness results for meromorphic functions when two nonlinear differential polynomials P ( f ) i = 1 k ( f ( i ) ) n i and P ( g ) i = 1 k ( g ( i ) ) n i share a nonzero polynomial with certain degree and our results improve and generalize some recent results in Y.-H. Cao, X.-B. Zhang (2012). Also we exhibit two examples to show that the conditions used in the results are sharp.

How to cite

top

Majumder, Sujoy, and Mandal, Rajib. "Generalizations on the results of Cao and Zhang." Mathematica Bohemica 147.1 (2022): 65-94. <http://eudml.org/doc/298134>.

@article{Majumder2022,
abstract = {We establish some uniqueness results for meromorphic functions when two nonlinear differential polynomials $P(f)\prod _\{i=1\}^\{k\}(f^\{(i)\})^\{n_\{i\}\}$ and $P(g)\prod _\{i=1\}^\{k\}(g^\{(i)\})^\{n_\{i\}\}$ share a nonzero polynomial with certain degree and our results improve and generalize some recent results in Y.-H. Cao, X.-B. Zhang (2012). Also we exhibit two examples to show that the conditions used in the results are sharp.},
author = {Majumder, Sujoy, Mandal, Rajib},
journal = {Mathematica Bohemica},
keywords = {meromorphic function; uniqueness; weighted sharing; differential polynomial},
language = {eng},
number = {1},
pages = {65-94},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {Generalizations on the results of Cao and Zhang},
url = {http://eudml.org/doc/298134},
volume = {147},
year = {2022},
}

TY - JOUR
AU - Majumder, Sujoy
AU - Mandal, Rajib
TI - Generalizations on the results of Cao and Zhang
JO - Mathematica Bohemica
PY - 2022
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 147
IS - 1
SP - 65
EP - 94
AB - We establish some uniqueness results for meromorphic functions when two nonlinear differential polynomials $P(f)\prod _{i=1}^{k}(f^{(i)})^{n_{i}}$ and $P(g)\prod _{i=1}^{k}(g^{(i)})^{n_{i}}$ share a nonzero polynomial with certain degree and our results improve and generalize some recent results in Y.-H. Cao, X.-B. Zhang (2012). Also we exhibit two examples to show that the conditions used in the results are sharp.
LA - eng
KW - meromorphic function; uniqueness; weighted sharing; differential polynomial
UR - http://eudml.org/doc/298134
ER -

References

top
  1. Alzahary, T. C., Yi, H. X., 10.1080/02781070410001701074, Complex Variables, Theory Appl. 49 (2004), 1063-1078. (2004) Zbl1067.30055MR2111304DOI10.1080/02781070410001701074
  2. Banerjee, A., 10.1016/j.jmaa.2006.04.078, J. Math. Anal. Appl. 327 (2007), 1273-1283. (2007) Zbl1115.30029MR2280003DOI10.1016/j.jmaa.2006.04.078
  3. Bergweiler, W., Eremenko, A., 10.4171/RMI/176, Rev. Mat. Iberoam. 11 (1995), 355-373. (1995) Zbl0830.30016MR1344897DOI10.4171/RMI/176
  4. Cao, Y.-H., Zhang, X.-B., 10.1186/1029-242X-2012-100, J. Inequal. Appl. 2012 (2012), Article ID 100, 10 pages. (2012) Zbl1291.30193MR2946490DOI10.1186/1029-242X-2012-100
  5. Chen, H., Fang, M., The value distribution of f n f ' , Sci. China, Ser. A. 38 (1995), 789-798 9999ZBL99999 0839. 30026. (1995) MR1360682
  6. Fang, M., Hua, X., Entire functions that share one value, J. Nanjing Univ., Math. Biq. 13 (1996), 44-48. (1996) Zbl0899.30022MR1411806
  7. Fang, M., Qiu, H., 10.1006/jmaa.2000.7270, J. Math. Anal. Appl. 268 (2002), 426-439. (2002) Zbl1030.30028MR1896207DOI10.1006/jmaa.2000.7270
  8. Hayman, W. K., Meromorphic Functions, Oxford Mathematical Monographs. Clarendon Press, Oxford (1964). (1964) Zbl0115.06203MR0164038
  9. Köhler, I., 10.1080/17476938908814322, Complex Variables, Theory Appl. 11 (1989), 39-48. (1989) Zbl0637.30029MR0998240DOI10.1080/17476938908814322
  10. Lahiri, I., 10.1080/17476930108815411, Complex Variables, Theory Appl. 46 (2001), 241-253. (2001) Zbl1025.30027MR1869738DOI10.1080/17476930108815411
  11. Lahiri, I., Dewan, S., 10.2996/kmj/1050496651, Kodai Math. J. 26 (2003), 95-100. (2003) Zbl1077.30025MR1966685DOI10.2996/kmj/1050496651
  12. Lahiri, I., Sarkar, A., Nonlinear differential polynomials sharing 1-points with weight two, Chin. J. Contemp. Math. 25 (2004), 325-334. (2004) Zbl1069.30051MR2159311
  13. Xu, J., Yi, H., Zhang, Z., 10.7153/mia-12-09, Math. Inequal. Appl. 12 (2009), 99-113. (2009) Zbl1169.30314MR2489354DOI10.7153/mia-12-09
  14. Yamanoi, K., 10.1007/BF02392741, Acta Math. 192 (2004), 225-294. (2004) Zbl1203.30035MR2096455DOI10.1007/BF02392741
  15. Yang, C.-C., 10.1007/BF01110921, Math. Z. 125 (1972), 107-112. (1972) Zbl0217.38402MR294642DOI10.1007/BF01110921
  16. Yang, C.-C., Hua, X., Uniqueness and value-sharing of meromorphic functions, Ann. Acad. Sci. Fenn., Math. 22 (1997), 395-406. (1997) Zbl0890.30019MR1469799
  17. Yang, C.-C., Yi, H.-X., 10.1007/978-94-017-3626-8, Mathematics and its Applications 557. Kluwer Academic Publishers, Dordrecht (2003). (2003) Zbl1070.30011MR2105668DOI10.1007/978-94-017-3626-8
  18. Yi, H.-X., On characteristic function of a meromorphic function and its derivative, Indian J. Math. 33 (1991), 119-133. (1991) Zbl0799.30018MR1140875
  19. Zhang, Q., Meromorphic function that shares one small function with its derivative, JIPAN, J. Inequal. Pure Appl. Math. 6 (2005), Article ID 116, 13 pages. (2005) Zbl1097.30033MR2178297
  20. Zhang, Z., Li, W., Picard exceptional values for two differential polynomials, Acta Math. Sin. 37 (1994), 828-835 Chinese. (1994) Zbl0815.30021MR1339161

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.