In telecommunication, linearity is the property of a system in which, if input signals X and Y result in system outputS (X ) and S (Y ) respectively, the input signalaX + bY will result in the output aS (X ) + bS (Y ), where S is the system transfer function and a and b are scalars.
... to help the lepers who had virtually nothing to keep them warm or fed. After twelve years of ministering to the patients at the leper colony (see Kalawao County, ...