Question

If diagonal elements of matrix is Ether zero or pure imaginary then matrix is called

Answer 1

Answer:

skew-Hermitian matrix

Answer 2

Answer:

All entries on the main diagonal of a skew-Hermitian matrix have to be pure imaginary; i.e., on the imaginary axis (the number zero is also considered purely imaginary). If and are skew-Hermitian, then is skew-Hermitian for all real scalars and .