This research reveals that every continuous PA-contraction has a unique fixed point, indicating a broad generalization of contraction principles.
We introduce a novel class of self-mappings on metric spaces, called PA-contractions (Path-Averaged Contractions), defined by an averaging condition over iterated distances. We prove that every continuous PA-contraction on a complete metric space has a unique fixed point, and the Picard iterates converge to it. This condition strictly generalizes the classical Banach contraction principle. We provide examples showing that PA-contractions are independent of F-contractions, Kannan, Chatterjea, and Ćirić contractions. A comparison table highlights the distinctions. The PA-condition captures long-term contractive behavior even when pointwise contraction fails.
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Nicola Fabiano (2025) studied this question.
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