Cofactor may also refer to: *

Cofactor (biochemistry) A cofactor is a non-protein chemical compound or metallic ion that is required for an enzyme's role as a catalyst (a catalyst is a substance that increases the rate of a chemical reaction). Cofactors can be considered "helper molecules" that as ...

, a substance that needs to be present in addition to an enzyme for a certain reaction to be catalysed * A domain parameter in

elliptic curve cryptography Elliptic-curve cryptography (ECC) is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. ECC allows smaller keys to provide equivalent security, compared to cryptosystems based on modula ...

, defined as the ratio between the order of a group and that of the subgroup * Cofactor (linear algebra), the signed minor of a matrix *

Minor (linear algebra) In linear algebra, a minor of a matrix (mathematics), matrix is the determinant of some smaller square matrix generated from by removing one or more of its rows and columns. Minors obtained by removing just one row and one column from square ma ...

, an alternative name for the determinant of a smaller matrix than that which it describes * Shannon cofactor, a term in Boole's (or Shannon's) expansion of a Boolean function

See also