LAKHDARI Abdelghani2025-09-172025-09-172024-08-26http://41.111.199.50:4000/handle/123456789/866ThisnotefocusesonestablishingafractionalversionakintotheSchweitzerinequality,specifically tailored to accommodate the left-sided Riemann-Liouville fractional integral operator. The Schweitzer inequalityisafundamentalmathematicalexpression,andextendingit tothefractionalrealmholdssignifi canceinadvancingourunderstandingandapplicationsoffractionalcalculus.enArticle