Douglas curvature in finsler geometry: A review of the notion and its applications in geometry and physics

This paper provides a comprehensive overview of the current state of research on Douglas curvature in Finsler spaces. It explores the significance, properties, and applications of Douglas curvature, and its role in understanding Finsler geometry. The paper reviews the historical development and significance of Douglas curvature, its characterizations, generalizations, and applications, and presents future research directions.