English

Random Fixed Point Theorems for Relaxed Asymptotic Contractions in Random Normed Modules

Functional Analysis 2026-05-07 v1

Abstract

We introduce the notion of a random relaxed asymptotic contraction in the setting of random normed modules. The contraction condition employs two quasi-metrics that are built directly from the random operator: a lower quasi-metric which adaptively switches between a four-point minimum and the ordinary one-step distance, and an upper quasi-metric which takes the maximum of four fundamental distances. The bounds are allowed to depend on the iteration index and are required to converge locally uniformly almost surely to a Boyd--Wong function. Using the fibre decomposition method based on σ\sigma-stability and the local property, we show that any such mapping defined on an essentially bounded, σ\sigma-stable and L0L^0-closed set admits a unique random fixed point, and all iterates converge in the (ϵ,λ)(\epsilon,\lambda)-topology. Our result strictly generalizes the random analogue of Kirk's asymptotic contraction theorem and unifies several deterministic and random fixed point theorems under a single flexible framework.

Keywords

Cite

@article{arxiv.2605.04432,
  title  = {Random Fixed Point Theorems for Relaxed Asymptotic Contractions in Random Normed Modules},
  author = {Jie Shi},
  journal= {arXiv preprint arXiv:2605.04432},
  year   = {2026}
}
R2 v1 2026-07-01T12:52:03.472Z