Editing Matrix decomposition (section)

=== Real Schur decomposition ===
*Applicable to: [[square matrix]] ''A''
*Decomposition: This is a version of Schur decomposition where <math>V</math> and <math>S</math> only contain real numbers. One can always write <math>A=VSV^\mathsf{T}</math> where ''V'' is a real [[orthogonal matrix]], <math>V^\mathsf{T}</math> is the [[matrix transpose|transpose]] of ''V'', and ''S'' is a [[block matrix|block upper triangular]] matrix called the real [[Schur form]]. The blocks on the diagonal of ''S'' are of size 1×1 (in which case they represent real eigenvalues) or 2×2 (in which case they are derived from [[complex conjugate]] eigenvalue pairs).