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Adapt A_d axioms to other generalized spaces such as b-metric spaces

Adapt the A_d axioms to other generalized distance structures, specifically including b-metric spaces, to formulate an appropriate counterpart of A_d-contractions beyond dislocated metric spaces.

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Background

The A_d axioms were designed to address challenges unique to dislocated metric spaces, such as nonzero self-distances, by strengthening uniform contraction (A2) and adding strict inequality for positive distances (A3). Translating these axioms to other generalized spaces like b-metric spaces would broaden applicability and may require new technical adjustments to handle altered triangle-type inequalities.

Such an adaptation would clarify how the A_d control functions interact with the relaxed triangular structure of b-metrics and whether analogous fixed point or related results can be established in those settings.

References

Furthermore, extending this concept to find best proximity points for non-self mappings or adapting the $\mathcal{A}_d$ axioms for other generalized spaces like b-metric spaces remain interesting open problems.

Fixed point results via a new class of Ad-contractions (2507.15635 - Panthi et al., 21 Jul 2025) in Conclusion, Section 6 (Future Work and Open Problems)