Hyers-Ulam stability and well-posedness for fixed point problems on quasi b-metric spaces

In this paper, we ensure the existence of a unique fixed point in quasi b-metric spaces for some contraction mappings requiring the concept of \Psi ^ {*}-admissibility. The Ulam-Hyers stability and well-posedness of these fixed point results have been studied and investigated. The obtained results generalize and extend many known results in the literature.