Measure of Noncompactness for Fractional Partial Hyperbolic Differential Equations with Unbounded Delay

Document Type : Original Article

Author

Mustapha Stambouli University of Mascara

Abstract
This paper deals with the existence of solutions for a class of partial hyperbolic differential equations of fractional order involving mixed partial Caputo fractional derivatives with infinite delay on unbounded domains. The qualitative analysis is conducted within an abstract Fréchet space topology governed by the phase space axioms of Hale and Kato to track the infinite history profile. By using a generalization of the classical Darbo fixed point theorem associated with a synchronized sequence of localized measures of noncompactness, we avoid restrictive complete compactness requirements to establish the main existence results. We provide an nontrivial example featuring an exponential damping structure to illustrate the applicability of our results across all compact layers.

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Articles in Press, Accepted Manuscript
Available Online from 16 October 2026

  • Receive Date 24 January 2026
  • Revise Date 29 June 2026
  • Accept Date 30 July 2026