Vol. 18 No. 4 (2025): Int. J. Open Problems Compt. Math., Vol. 18, No. 4, December 2025

Articles

• Some new parametric integral formulas depending on an adjustable function

  christophe chesneau

  1-11

  • IJOPCM2025401

• On Spectral Properties of Orthogonal Isometries

  Jacob Gachago, Benard Okelo, Willy Kangogo

  12-30

  • IJOPCM2025402

• New two-parameter integral formulas proved via the digamma function

  christophe chesneau

  31-38

  • IJOPCM20250103

• Achromatic Numbers of $n$-Complete Starfish and $SF(n, 1)$ Graphs

  Sorasak Leeratanavalee, Waranyu Moonta

  39-51

  • IJOPCM2025404

• On Spectra of Symmetrized Two-Sided Multiplication Operators Implemented by Orthogonal Isometries

  Benard Okelo, Gachago Jacob, Willy Kangogo

  52-69

  • IJOPCM2025405

• Dynamical Analysis and Modeling of COVID-19 and Related Diseases under Comorbidity in Complex Domains

  Florence Adongo, Aminer Titus, Benard Okelo, Benson Onyango

  70-92

  • IJOPM2025406

• New Look of Trigonometric and Hyperbolic Inequalities

  Abd Raouf CHOUIKHA

  93-117

  • IJOPM2025407

• Study of a particular class of integrals

  Daniel Felipe Martinez Barreto, Christophe Chesneau

  118-127

  • IJOPM2025408