if Y=vec(X)*conj(transpose(X)) and X is a N*N matrix.

sorry sir it is Y=vec(X)*conj(transpose(vec(X))) and X is N*N matrix.

This expression isnâ€™t well posed. `vec(X)`

is N^2\times 1, and `conj(transpose(X))`

is N\times N.

*conj(transpose(X)) and X is a N*N matrix.

sorry sir it is Y=vec(X)*conj(transpose(vec(X))) and X is N*N matrix.

This expression isnâ€™t well posed. `vec(X)`

is N^2\times 1, and `conj(transpose(X))`

is N\times N.