Differentiable Ostrowski type tensorial norm inequality for continuous functions of selfadjoint operators in Hilbert spaces. Gulf Journal of Mathematics, [S. l.], v. 15, n. 2, p. 40–55, 2023. DOI: 10.56947/gjom.v15i2.1247. Disponível em: https://gjom.org/index.php/gjom/article/view/1247. Acesso em: 7 sep. 2026.