A complementary good or service is something used or provided in combination with another good or service. The word complementary means combining to enhance or emphasize each other's qualities.

Linear complementarity problems (LCPs) constitute a salient class of mathematical models wherein one seeks vectors that fulfil mutually exclusive non-negativity and orthogonality conditions relative ...

We all know that getting enough protein in our diet is beneficial to our health, but why is that? Proteins are found in every cell, tissue, and bodily fluid. It is an important component of our diet, ...