Some surjectivity theorems with applications

H. K. Pathak; S. N. Mishra

Archivum Mathematicum (2013)

  • Volume: 049, Issue: 1, page 17-27
  • ISSN: 0044-8753

Abstract

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In this paper a new class of mappings, known as locally λ -strongly φ -accretive mappings, where λ and φ have special meanings, is introduced. This class of mappings constitutes a generalization of the well-known monotone mappings, accretive mappings and strongly φ -accretive mappings. Subsequently, the above notion is used to extend the results of Park and Park, Browder and Ray to locally λ -strongly φ -accretive mappings by using Caristi-Kirk fixed point theorem. In the sequel, we introduce the notion of generalized directional contractor and prove a surjectivity theorem which is used to solve certain functional equations in Banach spaces.

How to cite

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Pathak, H. K., and Mishra, S. N.. "Some surjectivity theorems with applications." Archivum Mathematicum 049.1 (2013): 17-27. <http://eudml.org/doc/252536>.

@article{Pathak2013,
abstract = {In this paper a new class of mappings, known as locally $\lambda $-strongly $\phi $-accretive mappings, where $\lambda $ and $\phi $ have special meanings, is introduced. This class of mappings constitutes a generalization of the well-known monotone mappings, accretive mappings and strongly $\phi $-accretive mappings. Subsequently, the above notion is used to extend the results of Park and Park, Browder and Ray to locally $\lambda $-strongly $\phi $-accretive mappings by using Caristi-Kirk fixed point theorem. In the sequel, we introduce the notion of generalized directional contractor and prove a surjectivity theorem which is used to solve certain functional equations in Banach spaces.},
author = {Pathak, H. K., Mishra, S. N.},
journal = {Archivum Mathematicum},
keywords = {strongly $\phi $-accretive; locally strongly $\phi $-accretive; locally $\lambda $-strongly $\phi $-accretive; fixed point theorem; strongly -accretive; locally strongly -accretive; locally -strongly -accretive; fixed point theorem},
language = {eng},
number = {1},
pages = {17-27},
publisher = {Department of Mathematics, Faculty of Science of Masaryk University, Brno},
title = {Some surjectivity theorems with applications},
url = {http://eudml.org/doc/252536},
volume = {049},
year = {2013},
}

TY - JOUR
AU - Pathak, H. K.
AU - Mishra, S. N.
TI - Some surjectivity theorems with applications
JO - Archivum Mathematicum
PY - 2013
PB - Department of Mathematics, Faculty of Science of Masaryk University, Brno
VL - 049
IS - 1
SP - 17
EP - 27
AB - In this paper a new class of mappings, known as locally $\lambda $-strongly $\phi $-accretive mappings, where $\lambda $ and $\phi $ have special meanings, is introduced. This class of mappings constitutes a generalization of the well-known monotone mappings, accretive mappings and strongly $\phi $-accretive mappings. Subsequently, the above notion is used to extend the results of Park and Park, Browder and Ray to locally $\lambda $-strongly $\phi $-accretive mappings by using Caristi-Kirk fixed point theorem. In the sequel, we introduce the notion of generalized directional contractor and prove a surjectivity theorem which is used to solve certain functional equations in Banach spaces.
LA - eng
KW - strongly $\phi $-accretive; locally strongly $\phi $-accretive; locally $\lambda $-strongly $\phi $-accretive; fixed point theorem; strongly -accretive; locally strongly -accretive; locally -strongly -accretive; fixed point theorem
UR - http://eudml.org/doc/252536
ER -

References

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  2. Altman, M., Contractors and contractor directions theory and applications, Marcel Dekker, New York, 1977. (1977) Zbl0363.65045MR0451686
  3. Altman, M., Weak contractor directions and weak directional contractions, Nonlinear Anal. 7 (1983), 1043–1049. (1983) Zbl0545.47034MR0713214
  4. Browder, F. E., Normal solvability and existence theorems for nonlinear mappings in Banach spaces, Problems in Nonlinear Analysis (C.I.M.E., IV Ciclo, Varenna, 1970), pp. 17–35, Edizioni Cremones, Rome, Italy, 1971. (1971) Zbl0234.47056MR0467430
  5. Browder, F. E., Normal solvability for nonlinear mappings and the geometry of Banach spaces, Problems in Nonlinear Analysis,C.I.M.E., IV Ciclo, Varenna, 1970, pp. 37–66, Edizioni Cremonese, Rome, Italy, 1971. (1971) Zbl0234.47055MR0438201
  6. Browder, F. E., 10.1090/S0002-9904-1972-12907-0, Bull. Amer. Math. Soc. 78 (1972), 186–192. (1972) MR0306992DOI10.1090/S0002-9904-1972-12907-0
  7. Browder, F. E., Nonlinear operators and nonlinear equations of evolution in Banach spaces, Proc. Sympos. Pure Math., vol. 18, Amer. Math. Soc., Providence, 1976. (1976) Zbl0327.47022MR0405188
  8. Caristi, J., 10.1090/S0002-9947-1976-0394329-4, Trans. Amer. Math. Soc. 215 (1976), 241–251. (1976) Zbl0305.47029MR0394329DOI10.1090/S0002-9947-1976-0394329-4
  9. Ekeland, I., Sur les problems variationnels, C. R. Acad. Sci. Paris Sér. I Math. 275 (1972), 1057–1059. (1972) MR0310670
  10. Goebel, K., Kirk, W. A., Topics in metric fixed point theory, Cambridge Studies in Advanced Mathematics, vol. 28, Cambridge University Press, 1990. (1990) Zbl0708.47031MR1074005
  11. Kirk, W. A., Caristi’s fixed point theorem and the theory of normal solvability, Proc. Conf. Fixed Point Theory and its Applications (Dalhousie Univ., June 1975), Academic Press, 1976, pp. 109–120. (1976) Zbl0377.47042MR0454754
  12. Park, J. A., Park, S., Surjectivity of φ –accretive operators, Proc. Amer. Math. Soc. 90 (2) (1984), 289–292. (1984) MR0727252
  13. Ray, W. O., 10.1016/0022-247X(82)90215-3, J. Math. Anal. Appl. 88 (1982), 566–571. (1982) Zbl0497.47034MR0667080DOI10.1016/0022-247X(82)90215-3
  14. Ray, W. O., Walker, A. M., 10.1016/0362-546X(82)90057-8, Nonlinear Anal. 6 (5) (1982), 423–433. (1982) Zbl0488.47031MR0661709DOI10.1016/0362-546X(82)90057-8

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