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    2025
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Research Article
Open Access

Harmonic–Arithmetic Index for the Generalized Mycielskian Graphs and Graphenes With Curvilinear Regression Models of Benzenoid Hydrocarbons

Pooja Danushri Namidass,  Shobana Loganathan, 
  • First Published: 01 May 2025
Research Article
Open Access

A Detailed Study of ABC-Type Fractal–Fractional Dynamical Model of HIV/AIDS

Mansour A. Abdulwasaa,  Esam Y. Salah,  Mohammed S. Abdo,  Bhausaheb Sontakke,  Sahar Ahmed Idris,  Mohammed Amood Al-Kamarany, 
  • First Published: 17 March 2025
Research Article
Open Access

Some New Soliton Solutions of Time Fractional Resonant Davey–Stewartson Equations

Esin İlhan,  Muhammed Yiğider,  Ercan Çelik,  Hasan Bulut, 
  • First Published: 17 March 2025
Research Article
Open Access

Estimating the Trends of Volatility in the Risk Equity Market Over the Short and Long Terms

Valeriana Lukitosari,  Eva O. Pristia,  Sentot D. Surjanto,  Amirul Hakam,  Suhud Wahyudi, 
  • First Published: 17 March 2025
Research Article
Open Access

The Fractional Variable-Order Grassi–Miller Map: Chaos, Complexity, and Control

Adel Ouannas,  Souad Bensid Ahmed,  Giuseppe Grassi,  Mohammed Al Horani,  Amina Aicha Khennaoui,  Amel Hioual, 
  • First Published: 27 February 2025