Involutory matrix
= Involutory matrix
{wiki=Involutory_matrix}
An involutory matrix is a square matrix \\( A \\) that satisfies the property: \\\[ A^2 = I \\\] where \\( I \\) is the identity matrix of the same dimension as \\( A \\). This means that when the matrix is multiplied by itself, the result is the identity matrix.