LAKHDARI Abdelghani2025-09-172025-09-172024-08-26http://dspace.ensti-annaba.dz:4000/handle/123456789/866vol. 22, no. 1, 2024, pp. 20240043 https://doi.org/10.1515/math-2024-0043This note focuses on establishing a fractional version akin to the Schweitzer inequality, specifically tailored to accommodate the left-sided Riemann-Liouville fractional integral operator. The Schweitzer inequality is a fundamental mathematical expression, and extending it to the fractional realm holds significance in advancing our understanding and applications of fractional calculus.enSchweitzer inequalityconcave functionsCauchy-Schwarz inequalityBernoulli inequalityRiemannLiouville integral operatorAn extension of Schweitzer's inequality to Riemann-Liouville fractional integralArticle