e/2 × 2 real matrices

Information
has gloss	eng: The set of 2 × 2 real matrices is denoted by M(2, R). Two matrices p and q in M(2, R) have a sum p + q given by matrix addition. The product matrix is formed from the dot product of the rows and columns of its factors through matrix multiplication. For
lexicalization	eng: 2 × 2 real matrices
instance of	e/Area