Noun
changing a square matrix to diagonal form (with all non-zero elements on the principal diagonal)
Source: WordNetthe diagonalization of a normal matrix by a unitary transformation Source: Internet
Our result here is more akin to a simultaneous diagonalization of two quadratic forms, and is useful for optimization of one form under conditions on the other. Source: Internet
The diagonalization proof technique can also be used to show that several other sets are uncountable, such as the set of all infinite sequences of natural numbers and the set of all subsets of the set of natural numbers. Source: Internet