lrux.skew_eye

lrux.skew_eye(n: int, dtype: dtype | None = None) → Array

The skew-symmetric identity matrix \(J\).

Parameters:

• n – Number of rows in the output divided by 2.

• dtype – Optional dtype, default to floating point.

Returns:

The skew-symmetric identity matrix of shape (2n, 2n), defined as

\[\begin{split}J = \begin{pmatrix} 0 & I \\ -I & 0 \end{pmatrix}\end{split}\]