Common Fixed Points of Cq-Commuting Maps via Generalized Gregus-Type Inequalities

Babu G. V. R., Alemayehu Negash, Meaza Bogale

We establish the existence of common fixed points for $C_q$-commuting self-mappings satisfying a generalized Gregus-type inequality with quadratic terms in $q$-starshaped subsets o…