| Summary: | Recently, Samet et al [24] introduced the concept of
alpha-psi contractive mappings and studied the existence of
fixed points for such mappings. In this article, we prove three
fixed point theorems for this class of operators in complete metric spaces.
Our results extend the results in [24] and well known fixed point
theorems due to Banach, Kannan, Chatterjea, Zamfirescu, Berinde, Suzuki,
Ciric, Nieto, Lopez, and many others.
We prove that alpha-psi contractions unify large classes of contractive
type operators, whose fixed points can be obtained by means of the
Picard iteration. Finally, we utilize our results to discuss the existence
and uniqueness of solutions to a class of quadratic integral equations.
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