Cramers

Cramers is the plural form of the surname Cramer and may refer to people who bear that surname. The name itself is of Germanic origin and appears in various European cultures with spelling variants such as Cramer and Kramer. In mathematical literature, the most recognized association with this name is Gabriel Cramer, an 18th‑century Swiss mathematician who formulated what is now known as Cramer's rule.

Cramer's rule provides an explicit solution to a system of n linear equations in n variables, assuming the coefficient matrix has a nonzero determinant. Each variable is expressed as a ratio: the determinant of a matrix formed by replacing the corresponding column with the constants vector, divided by the determinant of the original coefficient matrix. While conceptually straightforward, Cramer's rule is typically used for theoretical purposes or small systems because its computational cost grows quickly with n, unlike iterative or elimination methods.

The surname has many spelling variants and is distinct from but related to other surnames such as Cramer and Kramer. The form "Cramers" may appear as a plural or as a surname in genealogical contexts.