Using the fixed point method, we prove the Hyers–Ulam stability of the Cauchy–Jensen functional equation and of the Cauchy–Jensen functional inequality in fuzzy Banach ∗-algebras and in induced fuzzy C-algebras. Furthermore, using the fixed point method, we prove the Hyers–Ulam stability of fuzzy ∗-derivations in fuzzy Banach ∗-algebras and in induced fuzzy C-algebras. Published by Elsevier Ltd

OBJECTIVE This prospective study aimed to evaluate inter-observer agreement of the AO/OTA and Evans/Jensen classification systems with an emphasis on the effect of reviewer experience. In addition, the level of agreement in the determination of fracture stability across varying levels of experience was evaluated. SUBJECT AND METHODS A group of 12 reviewers (6 surgeons, 3 senior residents, 3 j...