Composition Operator: An operator defined by composing functions with a fixed analytic mapping, often studied for its boundedness and compactness properties in various function spaces.

Rajeev Kumar, Romesh Kumar, Composition Operators on Banach Function Spaces, Proceedings of the American Mathematical Society, Vol. 133, No. 7 (Jul., 2005), pp. 2109-2118 ...

Linear regression analysis, performed by using 7-year follow-up lung function variables as dependent variables and changes in body composition variables as independent variables, showed that 1 cm ...

Research in Dr. Schafer's Brain and Systemic Aging Lab at Mayo Clinic focuses on how aging changes cell identities, tissue composition, and brain health and function.

A fitness and nutrition program designed for older adults living with frailty significantly improved physical function and body composition over six month, according to new research published in BMC ...