Fixed Point Theorem and Stability for (α, ψ, ξ)-Generalized Contractive Multivalued Mappings

Fixed points of multivalued nonself almost contractions in metric-like spaces

“…They [5] proved the Banach's contraction principle for nonself multivalued mappings. For other results for multivalued nonself mappings, see [3,9,10,14,[17][18][19]. On the other hand, Berinde [6,7] introduced a new class of self mappings usually called weak contractions or almost contractions.…”