Empire and another by England, if he move at all, Heaven stay him, is fain to diagonalise.    From Wordnik.com.  [Becket and other plays] Reference

The spectral theorem for unitary matrices allows each of these matrices to be diagonalised; as is abelian, the matrices commute and so one can simultaneously diagonalise these matrices.    From Wordnik.com.  [What's new] Reference

Our Thomas never will diagonalise.    From Wordnik.com.  [Becket and other plays] Reference