Cofactor

Cofactor may refer to any of the following:
 * Cofactor (linear algebra), the signed minor of a matrix
 * Minor (linear algebra), an alternative name for the determinant of a smaller matrix than that which it describes
 * Cofactor (biochemistry), a substance that needs to be present in addition to an enzyme for a certain reaction to be catalysed.
 * Shannon expansion (Shannon cofactor), a derived function of another function, a notion useful in computer science and mathematics.
 * Cofactor (epidemiology) in epidemiology is a condition that exacerbates the effects of another condition; for instance, while chlamydia infection on its own will not cause cervical cancer, it increases the risk that HPV infection will do so.

Cofacteur Cofactor Cofator Kofaktor