The Boyd-Wong idea extended

Fixexd point theory and applications

Lech Pasicki¹ 

[1] Faculty of Applied Mathematics, AGH University of Science and Technology, Kraków, Poland

关键词: generalized contraction;    cyclic mapping;    dislocated metric;    fixed point;    47H10;    54H25;   

DOI  :  10.1186/s13663-016-0553-0

学科分类：数学（综合）

来源: SpringerOpen

【 摘 要 】

Boyd and Wong in their celebrated paper ‘On nonlinear contractions’ assumed the comparison function to be upper semicontinuous from the right. Our requirement presented in this paper is much more general and it extends also the well-known Matkowski condition.

【 授权许可】

CC BY