In this note we discuss three notions of dimension for triangulated categories: Rouquier dimension, diagonal and Serre dimension. We prove some basic properties these dimensions, compare them open problems.

background and objectives: patient safety (ps) is one of the most important and essential elements of quality in healthcare setting. a systematic review and meta-analysis was performed to assess the status of patient safety culture using the hospital survey on patient safety culture (hsopsc). methods: in this systematic review and meta-analysis study, data were collected through searching datab...